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Comparing libev/Changes (file contents):
Revision 1.138 by root, Sun Jul 19 07:20:41 2009 UTC vs.
Revision 1.288 by root, Sun Apr 28 12:45:20 2013 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 7TODO: ev_break for immediate exit (EVBREAK_NOW?)
8TODO: ev_feed_child_event
9TODO: document the special problem of signals around fork.
10TODO: store pid for each signal
11TODO: document file descriptor usage per loop
12TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for differign pid, clean up in loop_fork
13TODO: embed watchers need updating when fd changes
14TODO: document portbaility requirements for atomic pointer access
15
16 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
17
184.15 Fri Mar 1 12:04:50 CET 2013
19 - destroying a non-default loop would stop the global waitpid
20 watcher (Denis Bilenko).
21 - queueing pending watchers of higher priority from a watcher now invokes
22 them in a timely fashion (reported by Denis Bilenko).
23 - add throw() to all libev functions that cannot throw exceptions, for
24 further code size decrease when compiling for C++.
25 - add throw () to callbacks that must not throw exceptions (allocator,
26 syserr, loop acquire/release, periodic reschedule cbs).
27 - fix event_base_loop return code, add event_get_callback, event_base_new,
28 event_base_get_method calls to improve libevent 1.x emulation and add
29 some libevent 2.x functionality (based on a patch by Jeff Davey).
30 - add more memory fences to fix a bug reported by Jeff Davey. Better
31 be overfenced than underprotected.
32 - ev_run now returns a boolean status (true meaning watchers are
33 still active).
34 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
35 libev's EV_ERROR (reported by 191919).
36 - (ecb) add memory fence support for xlC (Darin McBride).
37 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
38 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
39 - work around some kernels losing file descriptors by leaking
40 the kqueue descriptor in the child.
41 - work around linux inotify not reporting IN_ATTRIB changes for directories
42 in many cases.
43 - include sys/syscall.h instead of plain syscall.h.
44 - check for io watcher loops in ev_verify, check for the most
45 common reported usage bug in ev_io_start.
46 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
47 - always use WSASend/WSARecv directly on windows, hoping that this
48 works in all cases (unlike read/write/send/recv...).
49 - try to detect signals around a fork faster (test program by
50 Denis Bilenko).
51 - work around recent glibc versions that leak memory in realloc.
52 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
53 the watcher base set (loop) method.
54 - rewrite the async/signal pipe logic to always keep a valid fd, which
55 simplifies (and hopefully correctifies :) the race checking
56 on fork, at the cost of one extra fd.
57 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
58 inotify-supporting filesystems.
59 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
60 versions ignore it before
61 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
62 - add some untested android support.
63 - enum expressions must be of type int (reported by Juan Pablo L).
64
654.11 Sat Feb 4 19:52:39 CET 2012
66 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
67 was documented already, but not implemented in the repeating case.
68 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
69 - fix a race where the workaround against the epoll fork bugs
70 caused signals to not be handled anymore.
71 - correct backend_fudge for most backends, and implement a windows
72 specific workaround to avoid looping because we call both
73 select and Sleep, both with different time resolutions.
74 - document range and guarantees of ev_sleep.
75 - document reasonable ranges for periodics interval and offset.
76 - rename backend_fudge to backend_mintime to avoid future confusion :)
77 - change the default periodic reschedule function to hopefully be more
78 exact and correct even in corner cases or in the far future.
79 - do not rely on -lm anymore: use it when available but use our
80 own floor () if it is missing. This should make it easier to embed,
81 as no external libraries are required.
82 - strategically import macros from libecb and mark rarely-used functions
83 as cache-cold (saving almost 2k code size on typical amd64 setups).
84 - add Symbols.ev and Symbols.event files, that were missing.
85 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
86 - fix #3 "be smart about timeouts" to not "deadlock" when
87 timeout == now, also improve the section overall.
88 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
89 - support new EV_API_STATIC mode to make all libev symbols
90 static.
91 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
92 were empty.
93
944.04 Wed Feb 16 09:01:51 CET 2011
95 - fix two problems in the native win32 backend, where reuse of fd's
96 with different underlying handles caused handles not to be removed
97 or added to the select set (analyzed and tested by Bert Belder).
98 - do no rely on ceil() in ev_e?poll.c.
99 - backport libev to HP-UX versions before 11 v3.
100 - configure did not detect nanosleep and clock_gettime properly when
101 they are available in the libc (as opposed to -lrt).
102
1034.03 Tue Jan 11 14:37:25 CET 2011
104 - officially support polling files with all backends.
105 - support files, /dev/zero etc. the same way as select in the epoll
106 backend, by generating events on our own.
107 - ports backend: work around solaris bug 6874410 and many related ones
108 (EINTR, maybe more), with no performance loss (note that the solaris
109 bug report is actually wrong, reality is far more bizarre and broken
110 than that).
111 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
112 #ifdef to test for them.
113 - new (experimental) function: ev_feed_signal.
114 - new (to become default) EVFLAG_NOSIGMASK flag.
115 - new EVBACKEND_MASK symbol.
116 - updated COMMON IDIOMS SECTION.
117
1184.01 Fri Nov 5 21:51:29 CET 2010
119 - automake fucked it up, apparently, --add-missing -f is not quite enough
120 to make it update its files, so 4.00 didn't install ev++.h and
121 event.h on make install. grrr.
122 - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
123 - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
124 - use "(libev) " prefix for all libev error messages now.
125
1264.00 Mon Oct 25 12:32:12 CEST 2010
127 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
128 - ev_embed_stop did not correctly stop the watcher (very good
129 testcase by Vladimir Timofeev).
130 - ev_run will now always update the current loop time - it erroneously
131 didn't when idle watchers were active, causing timers not to fire.
132 - fix a bug where a timeout of zero caused the timer not to fire
133 in the libevent emulation (testcase by Péter Szabó).
134 - applied win32 fixes by Michael Lenaghan (also James Mansion).
135 - replace EV_MINIMAL by EV_FEATURES.
136 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
137 seems the former is *much* faster than the latter.
138 - linux kernel version detection (for inotify bug workarounds)
139 did not work properly.
140 - reduce the number of spurious wake-ups with the ports backend.
141 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
142 - do async init within ev_async_start, not ev_async_set, which avoids
143 an API quirk where the set function must be called in the C++ API
144 even when there is nothing to set.
145 - add (undocumented) EV_ENABLE when adding events with kqueue,
146 this might help with OS X, which seems to need it despite documenting
147 not to need it (helpfully pointed out by Tilghman Lesher).
148 - do not use poll by default on freebsd, it's broken (what isn't
149 on freebsd...).
150 - allow to embed epoll on kernels >= 2.6.32.
151 - configure now prepends -O3, not appends it, so one can still
152 override it.
153 - ev.pod: greatly expanded the portability section, added a porting
154 section, a description of watcher states and made lots of minor fixes.
155 - disable poll backend on AIX, the poll header spams the namespace
156 and it's not worth working around dead platforms (reported
157 and analyzed by Aivars Kalvans).
158 - improve header file compatibility of the standalone eventfd code
159 in an obscure case.
160 - implement EV_AVOID_STDIO option.
161 - do not use sscanf to parse linux version number (smaller, faster,
162 no sscanf dependency).
163 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
164 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
165 - add section on accept() problems to the manpage.
166 - rename EV_TIMEOUT to EV_TIMER.
167 - rename ev_loop_count/depth/verify/loop/unloop.
168 - remove ev_default_destroy and ev_default_fork.
169 - switch to two-digit minor version.
170 - work around an apparent gentoo compiler bug.
171 - define _DARWIN_UNLIMITED_SELECT. just so.
172 - use enum instead of #define for most constants.
173 - improve compatibility to older C++ compilers.
174 - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
175 default arguments when compiled as C++.
176 - enable automake dependency tracking.
177 - ev_loop_new no longer leaks memory when loop creation failed.
178 - new ev_cleanup watcher type.
179
1803.9 Thu Dec 31 07:59:59 CET 2009
181 - signalfd is no longer used by default and has to be requested
182 explicitly - this means that easy to catch bugs become hard to
183 catch race conditions, but the users have spoken.
184 - point out the unspecified signal mask in the documentation, and
185 that this is a race condition regardless of EV_SIGNALFD.
186 - backport inotify code to C89.
187 - inotify file descriptors could leak into child processes.
188 - ev_stat watchers could keep an erroneous extra ref on the loop,
189 preventing exit when unregistering all watchers (testcases
190 provided by ry@tinyclouds.org).
191 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
192 symbols to make it easier for apps to do their own fd management.
193 - support EV_IDLE_ENABLE being disabled in ev++.h
194 (patch by Didier Spezia).
195 - take advantage of inotify_init1, if available, to set cloexec/nonblock
196 on fd creation, to avoid races.
197 - the signal handling pipe wasn't always initialised under windows
198 (analysed by lekma).
199 - changed minimum glibc requirement from glibc 2.9 to 2.7, for
200 signalfd.
201 - add missing string.h include (Denis F. Latypoff).
202 - only replace ev_stat.prev when we detect an actual difference,
203 so prev is (almost) always different to attr. this might
204 have caused the problems with 04_stat.t.
205 - add ev::timer->remaining () method to C++ API.
206
2073.8 Sun Aug 9 14:30:45 CEST 2009
8 - incompatible change: do not necessarily reset signal handler 208 - incompatible change: do not necessarily reset signal handler
9 to SIG_DFL when a sighandler is stopped. 209 to SIG_DFL when a sighandler is stopped.
10 - ev_default_destroy did not properly free or zero some members, 210 - ev_default_destroy did not properly free or zero some members,
11 potentially causing crashes and memory corruption on repated 211 potentially causing crashes and memory corruption on repeated
12 ev_default_destroy/ev_default_loop calls. 212 ev_default_destroy/ev_default_loop calls.
13 - take advantage of signalfd on GNU/Linux systems. 213 - take advantage of signalfd on GNU/Linux systems.
14 - document that the signal mask might be in an unspecified 214 - document that the signal mask might be in an unspecified
15 state when using libev's signal handling. 215 state when using libev's signal handling.
16 - take advantage of some GNU/Linux calls to set cloexec/nonblock 216 - take advantage of some GNU/Linux calls to set cloexec/nonblock
… …
51 - correctly zero the idx values for arrays, so destroying and 251 - correctly zero the idx values for arrays, so destroying and
52 reinitialising the default loop actually works (patch by 252 reinitialising the default loop actually works (patch by
53 Malek Hadj-Ali). 253 Malek Hadj-Ali).
54 - implement ev_suspend and ev_resume. 254 - implement ev_suspend and ev_resume.
55 - new EV_CUSTOM revents flag for use by applications. 255 - new EV_CUSTOM revents flag for use by applications.
56 - add documentation section about priorites. 256 - add documentation section about priorities.
57 - add a glossary to the dcoumentation. 257 - add a glossary to the documentation.
58 - extend the ev_fork description slightly. 258 - extend the ev_fork description slightly.
59 - optimize a jump out of call_pending. 259 - optimize a jump out of call_pending.
60 260
613.53 Sun Feb 15 02:38:20 CET 2009 2613.53 Sun Feb 15 02:38:20 CET 2009
62 - fix a bug in event pipe creation on win32 that would cause a 262 - fix a bug in event pipe creation on win32 that would cause a
… …
138 do similar changes for event.c. 338 do similar changes for event.c.
139 339
1403.45 Tue Oct 21 21:59:26 CEST 2008 3403.45 Tue Oct 21 21:59:26 CEST 2008
141 - disable inotify usage on linux <2.6.25, as it is broken 341 - disable inotify usage on linux <2.6.25, as it is broken
142 (reported by Yoann Vandoorselaere). 342 (reported by Yoann Vandoorselaere).
143 - ev_stat errornously would try to add inotify watchers 343 - ev_stat erroneously would try to add inotify watchers
144 even when inotify wasn't available (this should only 344 even when inotify wasn't available (this should only
145 have a performance impact). 345 have a performance impact).
146 - ev_once now passes both timeout and io to the callback if both 346 - ev_once now passes both timeout and io to the callback if both
147 occur concurrently, instead of giving timeouts precedence. 347 occur concurrently, instead of giving timeouts precedence.
148 - disable EV_USE_INOTIFY when sys/inotify.h is too old. 348 - disable EV_USE_INOTIFY when sys/inotify.h is too old.
… …
216 - enable inlining with gcc versions 2 and 3. 416 - enable inlining with gcc versions 2 and 3.
217 - work around broken poll implementations potentially 417 - work around broken poll implementations potentially
218 not clearing revents field in ev_poll (Brandon Black) 418 not clearing revents field in ev_poll (Brandon Black)
219 (no such systems are known at this time). 419 (no such systems are known at this time).
220 - work around a bug in realloc on openbsd and darwin, 420 - work around a bug in realloc on openbsd and darwin,
221 also makes the errornous valgrind complaints 421 also makes the erroneous valgrind complaints
222 go away (noted by various people). 422 go away (noted by various people).
223 - fix ev_async_pending, add c++ wrapper for ev_async 423 - fix ev_async_pending, add c++ wrapper for ev_async
224 (based on patch sent by Johannes Deisenhofer. 424 (based on patch sent by Johannes Deisenhofer).
225 - add sensible set method to ev::embed. 425 - add sensible set method to ev::embed.
226 - made integer constants type int in ev.h. 426 - made integer constants type int in ev.h.
227 427
2283.2 Wed Apr 2 17:11:19 CEST 2008 4283.2 Wed Apr 2 17:11:19 CEST 2008
229 - fix a 64 bit overflow issue in the select backend, 429 - fix a 64 bit overflow issue in the select backend,

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