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Comparing libev/Changes (file contents):
Revision 1.102 by root, Sat Mar 14 04:45:39 2009 UTC vs.
Revision 1.246 by root, Tue Dec 20 04:09:13 2011 UTC

1Revision history for libev, a high-performance and full-featured event loop. 1Revision history for libev, a high-performance and full-featured event loop.
2 2
3TODO: ev_loop_wakeup
4
5TODO: EV_NO_THREADS/NO_SMP and/or EV_USE_PTHREADS or so. also document.
6TODO: EV_STANDALONE == NO_HASSEL (do not use clock_gettime in ev_standalone)
7TODO: memory fences for clang
8ASKEXG!TODO: #define EV_API_DECL static? ev_default_loop_ptr? ev_rt_now?
9ASKEXG!TODO: fix repeat=0 in http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#Be_smart_about_timeouts
104.10
11 - fix a race where the workaround against the epoll fork bugs
12 caused signals to not be handled anymore.
13 - correct backend_fudge for most backends, and implement a windows
14 specific workaround to avoid looping because we call both
15 select and Sleep, both with different time resolutions.
16 - document range and guarantees of ev_sleep.
17 - document reasonable ranges for periodics interval and offset.
18 - rename backend_fudge to backend_mintime to avoid future confusion :)
19 - change the default periodic reschedule function to hopefully be more
20 exact and correct even in corner cases or in the far future.
21 - do not rely on -lm anymore: use it when available but use our
22 own floor () if it is missing. This should make it easier to embed,
23 as no external libraries are required.
24 - strategically import macros from libecb and mark rarely-used functions
25 as cache-cold (saving almost 2k code size on typical amd64 setups).
26 - add Symbols.ev and Symbols.event files, that were missing.
27 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
28 - fix #3 "be smart about timeouts" to not "deadlock" when
29 timeout == now, also improve the section overall.
30 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
31 - support new EV_API_STATIC mode to make all libev symbols
32 static.
33
344.04 Wed Feb 16 09:01:51 CET 2011
35 - fix two problems in the native win32 backend, where reuse of fd's
36 with different underlying handles caused handles not to be removed
37 or added to the select set (analyzed and tested by Bert Belder).
38 - do no rely on ceil() in ev_e?poll.c.
39 - backport libev to HP-UX versions before 11 v3.
40 - configure did not detect nanosleep and clock_gettime properly when
41 they are available in the libc (as opposed to -lrt).
42
434.03 Tue Jan 11 14:37:25 CET 2011
44 - officially support polling files with all backends.
45 - support files, /dev/zero etc. the same way as select in the epoll
46 backend, by generating events on our own.
47 - ports backend: work around solaris bug 6874410 and many related ones
48 (EINTR, maybe more), with no performance loss (note that the solaris
49 bug report is actually wrong, reality is far more bizarre and broken
50 than that).
51 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
52 #ifdef to test for them.
53 - new (experimental) function: ev_feed_signal.
54 - new (to become default) EVFLAG_NOSIGMASK flag.
55 - new EVBACKEND_MASK symbol.
56 - updated COMMON IDIOMS SECTION.
57
584.01 Fri Nov 5 21:51:29 CET 2010
59 - automake fucked it up, apparently, --add-missing -f is not quite enough
60 to make it update its files, so 4.00 didn't install ev++.h and
61 event.h on make install. grrr.
62 - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
63 - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
64 - use "(libev) " prefix for all libev error messages now.
65
664.00 Mon Oct 25 12:32:12 CEST 2010
67 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
68 - ev_embed_stop did not correctly stop the watcher (very good
69 testcase by Vladimir Timofeev).
70 - ev_run will now always update the current loop time - it erroneously
71 didn't when idle watchers were active, causing timers not to fire.
72 - fix a bug where a timeout of zero caused the timer not to fire
73 in the libevent emulation (testcase by Péter Szabó).
74 - applied win32 fixes by Michael Lenaghan (also James Mansion).
75 - replace EV_MINIMAL by EV_FEATURES.
76 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
77 seems the former is *much* faster than the latter.
78 - linux kernel version detection (for inotify bug workarounds)
79 did not work properly.
80 - reduce the number of spurious wake-ups with the ports backend.
81 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
82 - do async init within ev_async_start, not ev_async_set, which avoids
83 an API quirk where the set function must be called in the C++ API
84 even when there is nothing to set.
85 - add (undocumented) EV_ENABLE when adding events with kqueue,
86 this might help with OS X, which seems to need it despite documenting
87 not to need it (helpfully pointed out by Tilghman Lesher).
88 - do not use poll by default on freebsd, it's broken (what isn't
89 on freebsd...).
90 - allow to embed epoll on kernels >= 2.6.32.
91 - configure now prepends -O3, not appends it, so one can still
92 override it.
93 - ev.pod: greatly expanded the portability section, added a porting
94 section, a description of watcher states and made lots of minor fixes.
95 - disable poll backend on AIX, the poll header spams the namespace
96 and it's not worth working around dead platforms (reported
97 and analyzed by Aivars Kalvans).
98 - improve header file compatibility of the standalone eventfd code
99 in an obscure case.
100 - implement EV_AVOID_STDIO option.
101 - do not use sscanf to parse linux version number (smaller, faster,
102 no sscanf dependency).
103 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
104 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
105 - add section on accept() problems to the manpage.
106 - rename EV_TIMEOUT to EV_TIMER.
107 - rename ev_loop_count/depth/verify/loop/unloop.
108 - remove ev_default_destroy and ev_default_fork.
109 - switch to two-digit minor version.
110 - work around an apparent gentoo compiler bug.
111 - define _DARWIN_UNLIMITED_SELECT. just so.
112 - use enum instead of #define for most constants.
113 - improve compatibility to older C++ compilers.
114 - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
115 default arguments when compiled as C++.
116 - enable automake dependency tracking.
117 - ev_loop_new no longer leaks memory when loop creation failed.
118 - new ev_cleanup watcher type.
119
1203.9 Thu Dec 31 07:59:59 CET 2009
121 - signalfd is no longer used by default and has to be requested
122 explicitly - this means that easy to catch bugs become hard to
123 catch race conditions, but the users have spoken.
124 - point out the unspecified signal mask in the documentation, and
125 that this is a race condition regardless of EV_SIGNALFD.
126 - backport inotify code to C89.
127 - inotify file descriptors could leak into child processes.
128 - ev_stat watchers could keep an erroneous extra ref on the loop,
129 preventing exit when unregistering all watchers (testcases
130 provided by ry@tinyclouds.org).
131 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
132 symbols to make it easier for apps to do their own fd management.
133 - support EV_IDLE_ENABLE being disabled in ev++.h
134 (patch by Didier Spezia).
135 - take advantage of inotify_init1, if available, to set cloexec/nonblock
136 on fd creation, to avoid races.
137 - the signal handling pipe wasn't always initialised under windows
138 (analysed by lekma).
139 - changed minimum glibc requirement from glibc 2.9 to 2.7, for
140 signalfd.
141 - add missing string.h include (Denis F. Latypoff).
142 - only replace ev_stat.prev when we detect an actual difference,
143 so prev is (almost) always different to attr. this might
144 have caused the problems with 04_stat.t.
145 - add ev::timer->remaining () method to C++ API.
146
1473.8 Sun Aug 9 14:30:45 CEST 2009
148 - incompatible change: do not necessarily reset signal handler
149 to SIG_DFL when a sighandler is stopped.
150 - ev_default_destroy did not properly free or zero some members,
151 potentially causing crashes and memory corruption on repeated
152 ev_default_destroy/ev_default_loop calls.
153 - take advantage of signalfd on GNU/Linux systems.
154 - document that the signal mask might be in an unspecified
155 state when using libev's signal handling.
156 - take advantage of some GNU/Linux calls to set cloexec/nonblock
157 on fd creation, to avoid race conditions.
158
1593.7 Fri Jul 17 16:36:32 CEST 2009
160 - ev_unloop and ev_loop wrongly used a global variable to exit loops,
161 instead of using a per-loop variable (bug caught by accident...).
162 - the ev_set_io_collect_interval interpretation has changed.
163 - add new functionality: ev_set_userdata, ev_userdata,
164 ev_set_invoke_pending_cb, ev_set_loop_release_cb,
165 ev_invoke_pending, ev_pending_count, together with a long example
166 about thread locking.
167 - add ev_timer_remaining (as requested by Denis F. Latypoff).
168 - add ev_loop_depth.
169 - calling ev_unloop in fork/prepare watchers will no longer poll
170 for new events.
171 - Denis F. Latypoff corrected many typos in example code snippets.
172 - honor autoconf detection of EV_USE_CLOCK_SYSCALL, also double-
173 check that the syscall number is available before trying to
174 use it (reported by ry@tinyclouds).
175 - use GetSystemTimeAsFileTime instead of _timeb on windows, for
176 slightly higher accuracy.
177 - properly declare ev_loop_verify and ev_now_update even when
178 !EV_MULTIPLICITY.
179 - do not compile in any priority code when EV_MAXPRI == EV_MINPRI.
180 - support EV_MINIMAL==2 for a reduced API.
181 - actually 0-initialise struct sigaction when installing signals.
182 - add section on hibernate and stopped processes to ev_timer docs.
183
1843.6 Tue Apr 28 02:49:30 CEST 2009
185 - multiple timers becoming ready within an event loop iteration
186 will be invoked in the "correct" order now.
187 - do not leave the event loop early just because we have no active
188 watchers, fixing a problem when embedding a kqueue loop
189 that has active kernel events but no registered watchers
190 (reported by blacksand blacksand).
3 - correctly zero the idx values for arrays, so destroying and 191 - correctly zero the idx values for arrays, so destroying and
4 reinitialising the default loop actually works (patch by 192 reinitialising the default loop actually works (patch by
5 Malek Hadj-Ali). 193 Malek Hadj-Ali).
194 - implement ev_suspend and ev_resume.
195 - new EV_CUSTOM revents flag for use by applications.
196 - add documentation section about priorities.
197 - add a glossary to the dcoumentation.
198 - extend the ev_fork description slightly.
199 - optimize a jump out of call_pending.
6 200
73.53 Sun Feb 15 02:38:20 CET 2009 2013.53 Sun Feb 15 02:38:20 CET 2009
8 - fix a bug in event pipe creation on win32 that would cause a 202 - fix a bug in event pipe creation on win32 that would cause a
9 failed assertion on event loop creation (patch by Malek Hadj-Ali). 203 failed assertion on event loop creation (patch by Malek Hadj-Ali).
10 - probe for CLOCK_REALTIME support at runtime as well and fall 204 - probe for CLOCK_REALTIME support at runtime as well and fall
… …
84 do similar changes for event.c. 278 do similar changes for event.c.
85 279
863.45 Tue Oct 21 21:59:26 CEST 2008 2803.45 Tue Oct 21 21:59:26 CEST 2008
87 - disable inotify usage on linux <2.6.25, as it is broken 281 - disable inotify usage on linux <2.6.25, as it is broken
88 (reported by Yoann Vandoorselaere). 282 (reported by Yoann Vandoorselaere).
89 - ev_stat errornously would try to add inotify watchers 283 - ev_stat erroneously would try to add inotify watchers
90 even when inotify wasn't available (this should only 284 even when inotify wasn't available (this should only
91 have a performance impact). 285 have a performance impact).
92 - ev_once now passes both timeout and io to the callback if both 286 - ev_once now passes both timeout and io to the callback if both
93 occur concurrently, instead of giving timeouts precedence. 287 occur concurrently, instead of giving timeouts precedence.
94 - disable EV_USE_INOTIFY when sys/inotify.h is too old. 288 - disable EV_USE_INOTIFY when sys/inotify.h is too old.
… …
162 - enable inlining with gcc versions 2 and 3. 356 - enable inlining with gcc versions 2 and 3.
163 - work around broken poll implementations potentially 357 - work around broken poll implementations potentially
164 not clearing revents field in ev_poll (Brandon Black) 358 not clearing revents field in ev_poll (Brandon Black)
165 (no such systems are known at this time). 359 (no such systems are known at this time).
166 - work around a bug in realloc on openbsd and darwin, 360 - work around a bug in realloc on openbsd and darwin,
167 also makes the errornous valgrind complaints 361 also makes the erroneous valgrind complaints
168 go away (noted by various people). 362 go away (noted by various people).
169 - fix ev_async_pending, add c++ wrapper for ev_async 363 - fix ev_async_pending, add c++ wrapper for ev_async
170 (based on patch sent by Johannes Deisenhofer. 364 (based on patch sent by Johannes Deisenhofer).
171 - add sensible set method to ev::embed. 365 - add sensible set method to ev::embed.
172 - made integer constants type int in ev.h. 366 - made integer constants type int in ev.h.
173 367
1743.2 Wed Apr 2 17:11:19 CEST 2008 3683.2 Wed Apr 2 17:11:19 CEST 2008
175 - fix a 64 bit overflow issue in the select backend, 369 - fix a 64 bit overflow issue in the select backend,

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