[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?

TODO: "ev_stat on nfs"
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:	1.82
Committed:	Mon Nov 3 12:13:15 2008 UTC (15 years, 6 months ago) by root
Branch:	MAIN
Changes since 1.81:	+1 -0 lines
Log Message:	* empty log message *
#	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	1.81	WISH? monotonic clocks times/GetTickCount for coarse corrections?
4
5	root	1.82	TODO: "ev_stat on nfs"
6	root	1.80	3.48 Thu Oct 30 09:02:37 CET 2008
7	root	1.71	- further optimise away the EPOLL_CTL_ADD/MOD combo in the epoll
8			backend by assuming the kernel event mask hasn't changed if
9			ADD fails with EEXIST.
10	root	1.75	- work around spurious event notification bugs in epoll by using
11	root	1.77	a 32-bit generation counter. recreate kernel state if we receive
12	root	1.78	spurious notifications or unwanted events. this is very costly,
13			but I didn't come up with this horrible design.
14	root	1.71	- use memset to initialise most arrays now and do away with the
15			init functions.
16	root	1.72	- expand time-out strategies into a "Be smart about timeouts" section.
17			- drop the "struct" from all ev_watcher declarations in the
18	root	1.73	documentation and did other clarifications (yeah, it was a mistake
19			to have a struct AND a function called ev_loop).
20	root	1.74	- fix a bug where ev_default would not initialise the default
21			loop again after it was destroyed with ev_default_destroy.
22	root	1.79	- rename syserr to ev_syserr to avoid name clashes when embedding,
23			do similar changes for event.c.
24	root	1.71
25	root	1.69	3.45 Tue Oct 21 21:59:26 CEST 2008
26	root	1.67	- disable inotify usage on linux <2.6.25, as it is broken
27			(reported by Yoann Vandoorselaere).
28			- ev_stat errornously would try to add inotify watchers
29	root	1.68	even when inotify wasn't available (this should only
30	root	1.67	have a performance impact).
31	root	1.65	- ev_once now passes both timeout and io to the callback if both
32			occur concurrently, instead of giving timeouts precedence.
33	root	1.66	- disable EV_USE_INOTIFY when sys/inotify.h is too old.
34	root	1.65
35	root	1.62	3.44 Mon Sep 29 05:18:39 CEST 2008
36			- embed watchers now automatically invoke ev_loop_fork on the
37			embedded loop when the parent loop forks.
38	root	1.58	- new function: ev_now_update (loop).
39	root	1.57	- verify_watcher was not marked static.
40	root	1.59	- improve the "associating..." manpage section.
41	root	1.60	- documentation tweaks here and there.
42	root	1.57
43	root	1.56	3.43 Sun Jul 6 05:34:41 CEST 2008
44	root	1.54	- include more include files on windows to get struct _stati64
45	root	1.56	(reported by Chris Hulbert, but doesn't quite fix his issue).
46	root	1.53	- add missing #include <io.h> in ev.c on windows (reported by
47			Matt Tolton).
48
49	root	1.52	3.42 Tue Jun 17 12:12:07 CEST 2008
50	root	1.50	- work around yet another windows bug: FD_SET actually adds fd's
51			multiple times to the fd_SET, despite official MSN docs claiming
52	root	1.51	otherwise. Reported and well-analysed by Matt Tolton.
53			- define NFDBITS to 0 when EV_SELECT_IS_WINSOCKET to make it compile
54	root	1.48	(reported any analysed by Chris Hulbert).
55	root	1.49	- fix a bug in ev_ebadf (this function is only used to catch
56			programming errors in the libev user). reported by Matt Tolton.
57			- fix a bug in fd_intern on win32 (could lead to compile errors
58			under some circumstances, but would work correctly if it compiles).
59			reported by Matt Tolton.
60	root	1.50	- (try to) work around missing lstat on windows.
61	root	1.45	- pass in the write fd set as except fd set under windows. windows
62	root	1.46	is so uncontrollably lame that it requires this. this means that
63			switching off oobinline is not supported (but tcp/ip doesn't
64			have oob, so that would be stupid anyways.
65	root	1.47	- use posix module symbol to auto-detect monotonic clock presence
66			and some other default values.
67	root	1.45
68	root	1.44	3.41 Fri May 23 18:42:54 CEST 2008
69	root	1.46	- work around an obscure bug in winsocket select: if you
70	root	1.40	provide only empty fd sets then select returns WSAEINVAL. how sucky.
71	root	1.41	- improve timer scheduling stability and reduce use of time_epsilon.
72	root	1.36	- use 1-based 2-heap for EV_MINIMAL, simplifies code, reduces
73			codesize and makes for better cache-efficiency.
74			- use 3-based 4-heap for !EV_MINIMAL. this makes better use
75			of cpu cache lines and gives better growth behaviour than
76			2-based heaps.
77	root	1.38	- cache timestamp within heap for !EV_MINIMAL, to avoid random
78			memory accesses.
79			- document/add EV_USE_4HEAP and EV_HEAP_CACHE_AT.
80	root	1.33	- fix a potential aliasing issue in ev_timer_again.
81	root	1.35	- add/document ev_periodic_at, retract direct access to ->at.
82			- improve ev_stat docs.
83			- add portability requirements section.
84	root	1.39	- fix manpage headers etc.
85	root	1.40	- normalise WSA error codes to lower range on windows.
86	root	1.43	- add consistency check code that can be called automatically
87			or on demand to check for internal structures (ev_loop_verify).
88	root	1.31
89	root	1.30	3.31 Wed Apr 16 20:45:04 CEST 2008
90			- added last minute fix for ev_poll.c by Brandon Black.
91	root	1.29
92	root	1.28	3.3 Wed Apr 16 19:04:10 CEST 2008
93	root	1.23	- event_base_loopexit should return 0 on success
94			(W.C.A. Wijngaards).
95	root	1.20	- added linux eventfd support.
96			- try to autodetect epoll and inotify support
97			by libc header version if not using autoconf.
98	root	1.21	- new symbols: EV_DEFAULT_UC and EV_DEFAULT_UC_.
99			- declare functions defined in ev.h as inline if
100			C99 or gcc are available.
101			- enable inlining with gcc versions 2 and 3.
102	root	1.25	- work around broken poll implementations potentially
103			not clearing revents field in ev_poll (Brandon Black)
104			(no such systems are known at this time).
105	root	1.23	- work around a bug in realloc on openbsd and darwin,
106			also makes the errornous valgrind complaints
107			go away (noted by various people).
108	root	1.26	- fix ev_async_pending, add c++ wrapper for ev_async
109			(based on patch sent by Johannes Deisenhofer.
110			- add sensible set method to ev::embed.
111	root	1.27	- made integer constants type int in ev.h.
112	root	1.20
113	root	1.19	3.2 Wed Apr 2 17:11:19 CEST 2008
114	root	1.15	- fix a 64 bit overflow issue in the select backend,
115			by using fd_mask instead of int for the mask.
116	root	1.16	- rename internal sighandler to avoid clash with very old perls.
117	root	1.18	- entering ev_loop will not clear the ONESHOT or NONBLOCKING
118			flags of any outer loops anymore.
119	root	1.17	- add ev_async_pending.
120	root	1.15
121	root	1.14	3.1 Thu Mar 13 13:45:22 CET 2008
122	root	1.12	- implement ev_async watchers.
123	root	1.10	- only initialise signal pipe on demand.
124			- make use of sig_atomic_t configurable.
125	root	1.14	- improved documentation.
126	root	1.10
127	root	1.9	3.0 Mon Jan 28 13:14:47 CET 2008
128	root	1.6	- API/ABI bump to version 3.0.
129	root	1.4	- ev++.h includes "ev.h" by default now, not <ev.h>.
130			- slightly improved documentation.
131	root	1.5	- speed up signal detection after a fork.
132	root	1.6	- only optionally return trace status changed in ev_child
133			watchers.
134	root	1.8	- experimental (and undocumented) loop wrappers for ev++.h.
135	root	1.4
136	root	1.2	2.01 Tue Dec 25 08:04:41 CET 2007
137	root	1.3	- separate Changes file.
138	root	1.2	- fix ev_path_set => ev_stat_set typo.
139			- remove event_compat.h from the libev tarball.
140			- change how include files are found.
141			- doc updates.
142			- update licenses, explicitly allow for GPL relicensing.
143
144			2.0 Sat Dec 22 17:47:03 CET 2007
145			- new ev_sleep, ev_set_(io\|timeout)_collect_interval.
146			- removed epoll from embeddable fd set.
147			- fix embed watchers.
148			- renamed ev_embed.loop to other.
149			- added exported Symbol tables.
150			- undefine member wrapper macros at the end of ev.c.
151			- respect EV_H in ev++.h.
152
153			1.86 Tue Dec 18 02:36:57 CET 2007
154			- fix memleak on loop destroy (not relevant for perl).
155
156			1.85 Fri Dec 14 20:32:40 CET 2007
157			- fix some aliasing issues w.r.t. timers and periodics
158			(not relevant for perl).
159
160			(for historic versions refer to EV/Changes, found in the Perl interface)
161
162	root	1.1	0.1 Wed Oct 31 21:31:48 CET 2007
163			- original version; hacked together in <24h.
164