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Comparing libev/Changes (file contents):
Revision 1.138 by root, Sun Jul 19 07:20:41 2009 UTC vs.
Revision 1.275 by root, Tue Jun 19 12:29:43 2012 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_walk 3TODO: ev_loop_wakeup
4TODO: signal handling per loop 4TODO: EV_STANDALONE == NO_HASSEL (do not use clock_gettime in ev_standalone)
5TODO: NSIG etc. 5TODO: faq, process a thing in each iteration
6TODO: NOSIGFD/NOEVTFD/NOINOTIFY? 6TODO: dbeugging tips, ev_verify, ev_init twice
7TODO: gotsig per-loop 7
8TODO: document the special problem of signals around fork.
9TODO: ev_feed_child_event
10 - destroying a non-default loop would stop the global waitpid
11 watcher (Denis Bilenko).
12 - queueing pending watchers of higher priority from a watcher now invokes
13 them in a timely fashion (reported by Denis Bilenko).
14 - add throw() to all libev functions that cannot throw exceptions, for
15 further code size decrease when compiling for C++.
16 - add throw () to callbacks that must not throw exceptions (allocator,
17 syserr, loop acquire/release, periodic reschedule cbs).
18 - fix event_base_loop return code, add event_get_callback, event_base_new,
19 event_base_get_method calls to improve libevent 1.x emulation and add
20 some libevent 2.x functionality (based on a patch by Jeff Davey).
21 - add more memory fences to fix a bug reported by Jeff Davey. Better
22 be overfenced than underprotected.
23 - ev_run now returns a boolean status (true meaning watchers are
24 still active).
25 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
26 libev's EV_ERROR (reported by 191919).
27 - (ecb) add memory fence support for xlC (Darin McBride).
28 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
29 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
30 - work around some kernels losing file descriptors by leaking
31 the kqueue descriptor in the child.
32 - include sys/syscall.h instead of plain syscall.h.
33 - check for io watcher loops in ev_verify, check for the most
34 common reported usage bug in ev_io_start.
35 - chose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
36 - always use WSASend/WSARecv directly on windows, hoping that this
37 works in all cases (unlike read/write/send/recv...).
38 - try to detect signals around a fork faster (test program by
39 Denis Bilenko).
40 - work around recent glibc versions that leak memory in realloc.
41
424.11 Sat Feb 4 19:52:39 CET 2012
43 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
44 was documented already, but not implemented in the repeating case.
45 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
46 - fix a race where the workaround against the epoll fork bugs
47 caused signals to not be handled anymore.
48 - correct backend_fudge for most backends, and implement a windows
49 specific workaround to avoid looping because we call both
50 select and Sleep, both with different time resolutions.
51 - document range and guarantees of ev_sleep.
52 - document reasonable ranges for periodics interval and offset.
53 - rename backend_fudge to backend_mintime to avoid future confusion :)
54 - change the default periodic reschedule function to hopefully be more
55 exact and correct even in corner cases or in the far future.
56 - do not rely on -lm anymore: use it when available but use our
57 own floor () if it is missing. This should make it easier to embed,
58 as no external libraries are required.
59 - strategically import macros from libecb and mark rarely-used functions
60 as cache-cold (saving almost 2k code size on typical amd64 setups).
61 - add Symbols.ev and Symbols.event files, that were missing.
62 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
63 - fix #3 "be smart about timeouts" to not "deadlock" when
64 timeout == now, also improve the section overall.
65 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
66 - support new EV_API_STATIC mode to make all libev symbols
67 static.
68 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
69 were empty.
70
714.04 Wed Feb 16 09:01:51 CET 2011
72 - fix two problems in the native win32 backend, where reuse of fd's
73 with different underlying handles caused handles not to be removed
74 or added to the select set (analyzed and tested by Bert Belder).
75 - do no rely on ceil() in ev_e?poll.c.
76 - backport libev to HP-UX versions before 11 v3.
77 - configure did not detect nanosleep and clock_gettime properly when
78 they are available in the libc (as opposed to -lrt).
79
804.03 Tue Jan 11 14:37:25 CET 2011
81 - officially support polling files with all backends.
82 - support files, /dev/zero etc. the same way as select in the epoll
83 backend, by generating events on our own.
84 - ports backend: work around solaris bug 6874410 and many related ones
85 (EINTR, maybe more), with no performance loss (note that the solaris
86 bug report is actually wrong, reality is far more bizarre and broken
87 than that).
88 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
89 #ifdef to test for them.
90 - new (experimental) function: ev_feed_signal.
91 - new (to become default) EVFLAG_NOSIGMASK flag.
92 - new EVBACKEND_MASK symbol.
93 - updated COMMON IDIOMS SECTION.
94
954.01 Fri Nov 5 21:51:29 CET 2010
96 - automake fucked it up, apparently, --add-missing -f is not quite enough
97 to make it update its files, so 4.00 didn't install ev++.h and
98 event.h on make install. grrr.
99 - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
100 - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
101 - use "(libev) " prefix for all libev error messages now.
102
1034.00 Mon Oct 25 12:32:12 CEST 2010
104 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
105 - ev_embed_stop did not correctly stop the watcher (very good
106 testcase by Vladimir Timofeev).
107 - ev_run will now always update the current loop time - it erroneously
108 didn't when idle watchers were active, causing timers not to fire.
109 - fix a bug where a timeout of zero caused the timer not to fire
110 in the libevent emulation (testcase by Péter Szabó).
111 - applied win32 fixes by Michael Lenaghan (also James Mansion).
112 - replace EV_MINIMAL by EV_FEATURES.
113 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
114 seems the former is *much* faster than the latter.
115 - linux kernel version detection (for inotify bug workarounds)
116 did not work properly.
117 - reduce the number of spurious wake-ups with the ports backend.
118 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
119 - do async init within ev_async_start, not ev_async_set, which avoids
120 an API quirk where the set function must be called in the C++ API
121 even when there is nothing to set.
122 - add (undocumented) EV_ENABLE when adding events with kqueue,
123 this might help with OS X, which seems to need it despite documenting
124 not to need it (helpfully pointed out by Tilghman Lesher).
125 - do not use poll by default on freebsd, it's broken (what isn't
126 on freebsd...).
127 - allow to embed epoll on kernels >= 2.6.32.
128 - configure now prepends -O3, not appends it, so one can still
129 override it.
130 - ev.pod: greatly expanded the portability section, added a porting
131 section, a description of watcher states and made lots of minor fixes.
132 - disable poll backend on AIX, the poll header spams the namespace
133 and it's not worth working around dead platforms (reported
134 and analyzed by Aivars Kalvans).
135 - improve header file compatibility of the standalone eventfd code
136 in an obscure case.
137 - implement EV_AVOID_STDIO option.
138 - do not use sscanf to parse linux version number (smaller, faster,
139 no sscanf dependency).
140 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
141 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
142 - add section on accept() problems to the manpage.
143 - rename EV_TIMEOUT to EV_TIMER.
144 - rename ev_loop_count/depth/verify/loop/unloop.
145 - remove ev_default_destroy and ev_default_fork.
146 - switch to two-digit minor version.
147 - work around an apparent gentoo compiler bug.
148 - define _DARWIN_UNLIMITED_SELECT. just so.
149 - use enum instead of #define for most constants.
150 - improve compatibility to older C++ compilers.
151 - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
152 default arguments when compiled as C++.
153 - enable automake dependency tracking.
154 - ev_loop_new no longer leaks memory when loop creation failed.
155 - new ev_cleanup watcher type.
156
1573.9 Thu Dec 31 07:59:59 CET 2009
158 - signalfd is no longer used by default and has to be requested
159 explicitly - this means that easy to catch bugs become hard to
160 catch race conditions, but the users have spoken.
161 - point out the unspecified signal mask in the documentation, and
162 that this is a race condition regardless of EV_SIGNALFD.
163 - backport inotify code to C89.
164 - inotify file descriptors could leak into child processes.
165 - ev_stat watchers could keep an erroneous extra ref on the loop,
166 preventing exit when unregistering all watchers (testcases
167 provided by ry@tinyclouds.org).
168 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
169 symbols to make it easier for apps to do their own fd management.
170 - support EV_IDLE_ENABLE being disabled in ev++.h
171 (patch by Didier Spezia).
172 - take advantage of inotify_init1, if available, to set cloexec/nonblock
173 on fd creation, to avoid races.
174 - the signal handling pipe wasn't always initialised under windows
175 (analysed by lekma).
176 - changed minimum glibc requirement from glibc 2.9 to 2.7, for
177 signalfd.
178 - add missing string.h include (Denis F. Latypoff).
179 - only replace ev_stat.prev when we detect an actual difference,
180 so prev is (almost) always different to attr. this might
181 have caused the problems with 04_stat.t.
182 - add ev::timer->remaining () method to C++ API.
183
1843.8 Sun Aug 9 14:30:45 CEST 2009
8 - incompatible change: do not necessarily reset signal handler 185 - incompatible change: do not necessarily reset signal handler
9 to SIG_DFL when a sighandler is stopped. 186 to SIG_DFL when a sighandler is stopped.
10 - ev_default_destroy did not properly free or zero some members, 187 - ev_default_destroy did not properly free or zero some members,
11 potentially causing crashes and memory corruption on repated 188 potentially causing crashes and memory corruption on repeated
12 ev_default_destroy/ev_default_loop calls. 189 ev_default_destroy/ev_default_loop calls.
13 - take advantage of signalfd on GNU/Linux systems. 190 - take advantage of signalfd on GNU/Linux systems.
14 - document that the signal mask might be in an unspecified 191 - document that the signal mask might be in an unspecified
15 state when using libev's signal handling. 192 state when using libev's signal handling.
16 - take advantage of some GNU/Linux calls to set cloexec/nonblock 193 - take advantage of some GNU/Linux calls to set cloexec/nonblock
… …
51 - correctly zero the idx values for arrays, so destroying and 228 - correctly zero the idx values for arrays, so destroying and
52 reinitialising the default loop actually works (patch by 229 reinitialising the default loop actually works (patch by
53 Malek Hadj-Ali). 230 Malek Hadj-Ali).
54 - implement ev_suspend and ev_resume. 231 - implement ev_suspend and ev_resume.
55 - new EV_CUSTOM revents flag for use by applications. 232 - new EV_CUSTOM revents flag for use by applications.
56 - add documentation section about priorites. 233 - add documentation section about priorities.
57 - add a glossary to the dcoumentation. 234 - add a glossary to the dcoumentation.
58 - extend the ev_fork description slightly. 235 - extend the ev_fork description slightly.
59 - optimize a jump out of call_pending. 236 - optimize a jump out of call_pending.
60 237
613.53 Sun Feb 15 02:38:20 CET 2009 2383.53 Sun Feb 15 02:38:20 CET 2009
… …
138 do similar changes for event.c. 315 do similar changes for event.c.
139 316
1403.45 Tue Oct 21 21:59:26 CEST 2008 3173.45 Tue Oct 21 21:59:26 CEST 2008
141 - disable inotify usage on linux <2.6.25, as it is broken 318 - disable inotify usage on linux <2.6.25, as it is broken
142 (reported by Yoann Vandoorselaere). 319 (reported by Yoann Vandoorselaere).
143 - ev_stat errornously would try to add inotify watchers 320 - ev_stat erroneously would try to add inotify watchers
144 even when inotify wasn't available (this should only 321 even when inotify wasn't available (this should only
145 have a performance impact). 322 have a performance impact).
146 - ev_once now passes both timeout and io to the callback if both 323 - ev_once now passes both timeout and io to the callback if both
147 occur concurrently, instead of giving timeouts precedence. 324 occur concurrently, instead of giving timeouts precedence.
148 - disable EV_USE_INOTIFY when sys/inotify.h is too old. 325 - disable EV_USE_INOTIFY when sys/inotify.h is too old.
… …
216 - enable inlining with gcc versions 2 and 3. 393 - enable inlining with gcc versions 2 and 3.
217 - work around broken poll implementations potentially 394 - work around broken poll implementations potentially
218 not clearing revents field in ev_poll (Brandon Black) 395 not clearing revents field in ev_poll (Brandon Black)
219 (no such systems are known at this time). 396 (no such systems are known at this time).
220 - work around a bug in realloc on openbsd and darwin, 397 - work around a bug in realloc on openbsd and darwin,
221 also makes the errornous valgrind complaints 398 also makes the erroneous valgrind complaints
222 go away (noted by various people). 399 go away (noted by various people).
223 - fix ev_async_pending, add c++ wrapper for ev_async 400 - fix ev_async_pending, add c++ wrapper for ev_async
224 (based on patch sent by Johannes Deisenhofer. 401 (based on patch sent by Johannes Deisenhofer).
225 - add sensible set method to ev::embed. 402 - add sensible set method to ev::embed.
226 - made integer constants type int in ev.h. 403 - made integer constants type int in ev.h.
227 404
2283.2 Wed Apr 2 17:11:19 CEST 2008 4053.2 Wed Apr 2 17:11:19 CEST 2008
229 - fix a 64 bit overflow issue in the select backend, 406 - fix a 64 bit overflow issue in the select backend,

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