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Comparing libev/Changes (file contents):
Revision 1.174 by root, Sat Mar 27 02:26:27 2010 UTC vs.
Revision 1.312 by root, Wed Nov 16 17:39:51 2016 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: ABI??? API????? Changes??? 34.23 Wed Nov 16 18:23:41 CET 2016
4TODO: win32 write() to socket for signal handling 4 - move some declarations at the beginning to help certain retarded
5 microsoft compilers, even though their documentation claims
6 otherwise (reported by Ruslan Osmanov).
7
84.22 Sun Dec 20 22:11:50 CET 2015
9 - when epoll detects unremovable fds in the fd set, rebuild
10 only the epoll descriptor, not the signal pipe, to avoid
11 SIGPIPE in ev_async_send. This doesn't solve it on fork,
12 so document what needs to be done in ev_loop_fork
13 (analyzed by Benjamin Mahler).
14 - remove superfluous sys/timeb.h include on win32
15 (analyzed by Jason Madden).
16 - updated libecb.
17
184.20 Sat Jun 20 13:01:43 CEST 2015
19 - prefer noexcept over throw () with C++ 11.
20 - update ecb.h due to incompatibilities with c11.
21 - fix a potential aliasing issue when reading and writing
22 watcher callbacks.
23
244.19 Thu Sep 25 08:18:25 CEST 2014
25 - ev.h wasn't valid C++ anymore, which tripped compilers other than
26 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
27 C++ doesn't support typedefs for function pointers fully, so the affected
28 declarations have to spell out the types each time.
29 - when not using autoconf, tighten the check for clock_gettime and related
30 functionality.
31
324.18 Fri Sep 5 17:55:26 CEST 2014
33 - events on files were not always generated properly with the
34 epoll backend (testcase by Assaf Inbal).
35 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
36 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
37 - use a reasonable fallback for EV_NSIG instead of erroring out
38 when we can't detect the signal set size.
39 - in the absence of autoconf, do not use the clock syscall
40 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
41 doing clock_gettime in userspace).
42 - ensure extern "C" function pointers are used for externally-visible
43 loop callbacks (not watcher callbacks yet).
44 - (ecb) work around memory barriers and volatile apparently both being
45 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
46
474.15 Fri Mar 1 12:04:50 CET 2013
48 - destroying a non-default loop would stop the global waitpid
49 watcher (Denis Bilenko).
50 - queueing pending watchers of higher priority from a watcher now invokes
51 them in a timely fashion (reported by Denis Bilenko).
52 - add throw() to all libev functions that cannot throw exceptions, for
53 further code size decrease when compiling for C++.
54 - add throw () to callbacks that must not throw exceptions (allocator,
55 syserr, loop acquire/release, periodic reschedule cbs).
56 - fix event_base_loop return code, add event_get_callback, event_base_new,
57 event_base_get_method calls to improve libevent 1.x emulation and add
58 some libevent 2.x functionality (based on a patch by Jeff Davey).
59 - add more memory fences to fix a bug reported by Jeff Davey. Better
60 be overfenced than underprotected.
61 - ev_run now returns a boolean status (true meaning watchers are
62 still active).
63 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
64 libev's EV_ERROR (reported by 191919).
65 - (ecb) add memory fence support for xlC (Darin McBride).
66 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
67 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
68 - work around some kernels losing file descriptors by leaking
69 the kqueue descriptor in the child.
70 - work around linux inotify not reporting IN_ATTRIB changes for directories
71 in many cases.
72 - include sys/syscall.h instead of plain syscall.h.
73 - check for io watcher loops in ev_verify, check for the most
74 common reported usage bug in ev_io_start.
75 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
76 - always use WSASend/WSARecv directly on windows, hoping that this
77 works in all cases (unlike read/write/send/recv...).
78 - try to detect signals around a fork faster (test program by
79 Denis Bilenko).
80 - work around recent glibc versions that leak memory in realloc.
81 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
82 the watcher base set (loop) method.
83 - rewrite the async/signal pipe logic to always keep a valid fd, which
84 simplifies (and hopefully correctifies :) the race checking
85 on fork, at the cost of one extra fd.
86 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
87 inotify-supporting filesystems.
88 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
89 versions ignore it before
90 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
91 - add some untested android support.
92 - enum expressions must be of type int (reported by Juan Pablo L).
93
944.11 Sat Feb 4 19:52:39 CET 2012
95 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
96 was documented already, but not implemented in the repeating case.
97 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
98 - fix a race where the workaround against the epoll fork bugs
99 caused signals to not be handled anymore.
100 - correct backend_fudge for most backends, and implement a windows
101 specific workaround to avoid looping because we call both
102 select and Sleep, both with different time resolutions.
103 - document range and guarantees of ev_sleep.
104 - document reasonable ranges for periodics interval and offset.
105 - rename backend_fudge to backend_mintime to avoid future confusion :)
106 - change the default periodic reschedule function to hopefully be more
107 exact and correct even in corner cases or in the far future.
108 - do not rely on -lm anymore: use it when available but use our
109 own floor () if it is missing. This should make it easier to embed,
110 as no external libraries are required.
111 - strategically import macros from libecb and mark rarely-used functions
112 as cache-cold (saving almost 2k code size on typical amd64 setups).
113 - add Symbols.ev and Symbols.event files, that were missing.
114 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
115 - fix #3 "be smart about timeouts" to not "deadlock" when
116 timeout == now, also improve the section overall.
117 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
118 - support new EV_API_STATIC mode to make all libev symbols
119 static.
120 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
121 were empty.
122
1234.04 Wed Feb 16 09:01:51 CET 2011
124 - fix two problems in the native win32 backend, where reuse of fd's
125 with different underlying handles caused handles not to be removed
126 or added to the select set (analyzed and tested by Bert Belder).
127 - do no rely on ceil() in ev_e?poll.c.
128 - backport libev to HP-UX versions before 11 v3.
129 - configure did not detect nanosleep and clock_gettime properly when
130 they are available in the libc (as opposed to -lrt).
131
1324.03 Tue Jan 11 14:37:25 CET 2011
133 - officially support polling files with all backends.
134 - support files, /dev/zero etc. the same way as select in the epoll
135 backend, by generating events on our own.
136 - ports backend: work around solaris bug 6874410 and many related ones
137 (EINTR, maybe more), with no performance loss (note that the solaris
138 bug report is actually wrong, reality is far more bizarre and broken
139 than that).
140 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
141 #ifdef to test for them.
142 - new (experimental) function: ev_feed_signal.
143 - new (to become default) EVFLAG_NOSIGMASK flag.
144 - new EVBACKEND_MASK symbol.
145 - updated COMMON IDIOMS SECTION.
146
1474.01 Fri Nov 5 21:51:29 CET 2010
148 - automake fucked it up, apparently, --add-missing -f is not quite enough
149 to make it update its files, so 4.00 didn't install ev++.h and
150 event.h on make install. grrr.
151 - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
152 - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
153 - use "(libev) " prefix for all libev error messages now.
154
1554.00 Mon Oct 25 12:32:12 CEST 2010
5 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading. 156 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
6 - ev_embed_stop did not correctly stop the watcher (very good 157 - ev_embed_stop did not correctly stop the watcher (very good
7 testcase by Vladimir Timofeev). 158 testcase by Vladimir Timofeev).
159 - ev_run will now always update the current loop time - it erroneously
160 didn't when idle watchers were active, causing timers not to fire.
161 - fix a bug where a timeout of zero caused the timer not to fire
162 in the libevent emulation (testcase by Péter Szabó).
8 - applied win32 fixes by Michael Lenaghan (also James Mansion). 163 - applied win32 fixes by Michael Lenaghan (also James Mansion).
9 - replace EV_MINIMAL by EV_FEATURES. 164 - replace EV_MINIMAL by EV_FEATURES.
165 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
166 seems the former is *much* faster than the latter.
167 - linux kernel version detection (for inotify bug workarounds)
168 did not work properly.
169 - reduce the number of spurious wake-ups with the ports backend.
10 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu). 170 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
171 - do async init within ev_async_start, not ev_async_set, which avoids
172 an API quirk where the set function must be called in the C++ API
173 even when there is nothing to set.
11 - add (undocumented) EV_ENABLE when adding events with kqueue, 174 - add (undocumented) EV_ENABLE when adding events with kqueue,
175 this might help with OS X, which seems to need it despite documenting
12 this might help (helpfully pointed out by Tilghman Lesher). 176 not to need it (helpfully pointed out by Tilghman Lesher).
177 - do not use poll by default on freebsd, it's broken (what isn't
178 on freebsd...).
179 - allow to embed epoll on kernels >= 2.6.32.
13 - configure now prepends -O3, not appends it, so one can still 180 - configure now prepends -O3, not appends it, so one can still
14 override it. 181 override it.
182 - ev.pod: greatly expanded the portability section, added a porting
183 section, a description of watcher states and made lots of minor fixes.
15 - disable poll backend on AIX, the poll header spams the namespace 184 - disable poll backend on AIX, the poll header spams the namespace
16 and it's not worth working around dead platforms (reported 185 and it's not worth working around dead platforms (reported
17 and analyzed by Aivars Kalvans). 186 and analyzed by Aivars Kalvans).
18 - improve header file compatibility of the standalone eventfd code 187 - improve header file compatibility of the standalone eventfd code
19 in an obscure case. 188 in an obscure case.
… …
22 no sscanf dependency). 191 no sscanf dependency).
23 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings. 192 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
24 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs. 193 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
25 - add section on accept() problems to the manpage. 194 - add section on accept() problems to the manpage.
26 - rename EV_TIMEOUT to EV_TIMER. 195 - rename EV_TIMEOUT to EV_TIMER.
27 - rename ev_loop_count/depth/verify. 196 - rename ev_loop_count/depth/verify/loop/unloop.
197 - remove ev_default_destroy and ev_default_fork.
28 - switch to two-digit minor version. 198 - switch to two-digit minor version.
199 - work around an apparent gentoo compiler bug.
200 - define _DARWIN_UNLIMITED_SELECT. just so.
201 - use enum instead of #define for most constants.
202 - improve compatibility to older C++ compilers.
203 - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
204 default arguments when compiled as C++.
205 - enable automake dependency tracking.
206 - ev_loop_new no longer leaks memory when loop creation failed.
207 - new ev_cleanup watcher type.
29 208
303.9 Thu Dec 31 07:59:59 CET 2009 2093.9 Thu Dec 31 07:59:59 CET 2009
31 - signalfd is no longer used by default and has to be requested 210 - signalfd is no longer used by default and has to be requested
32 explicitly - this means that easy to catch bugs become hard to 211 explicitly - this means that easy to catch bugs become hard to
33 catch race conditions, but the users have spoken. 212 catch race conditions, but the users have spoken.
34 - point out the unspecified signal mask in the documentation, and 213 - point out the unspecified signal mask in the documentation, and
35 that this is a race condition regardless of EV_SIGNALFD. 214 that this is a race condition regardless of EV_SIGNALFD.
36 - backport inotify code to C89. 215 - backport inotify code to C89.
37 - inotify file descriptors could leak into child processes. 216 - inotify file descriptors could leak into child processes.
38 - ev_stat watchers could keep an errornous extra ref on the loop, 217 - ev_stat watchers could keep an erroneous extra ref on the loop,
39 preventing exit when unregistering all watchers (testcases 218 preventing exit when unregistering all watchers (testcases
40 provided by ry@tinyclouds.org). 219 provided by ry@tinyclouds.org).
41 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration 220 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
42 symbols to make it easier for apps to do their own fd management. 221 symbols to make it easier for apps to do their own fd management.
43 - support EV_IDLE_ENABLE being disabled in ev++.h 222 - support EV_IDLE_ENABLE being disabled in ev++.h
… …
49 - changed minimum glibc requirement from glibc 2.9 to 2.7, for 228 - changed minimum glibc requirement from glibc 2.9 to 2.7, for
50 signalfd. 229 signalfd.
51 - add missing string.h include (Denis F. Latypoff). 230 - add missing string.h include (Denis F. Latypoff).
52 - only replace ev_stat.prev when we detect an actual difference, 231 - only replace ev_stat.prev when we detect an actual difference,
53 so prev is (almost) always different to attr. this might 232 so prev is (almost) always different to attr. this might
54 have caused the probems with 04_stat.t. 233 have caused the problems with 04_stat.t.
55 - add ev::timer->remaining () method to C++ API. 234 - add ev::timer->remaining () method to C++ API.
56 235
573.8 Sun Aug 9 14:30:45 CEST 2009 2363.8 Sun Aug 9 14:30:45 CEST 2009
58 - incompatible change: do not necessarily reset signal handler 237 - incompatible change: do not necessarily reset signal handler
59 to SIG_DFL when a sighandler is stopped. 238 to SIG_DFL when a sighandler is stopped.
60 - ev_default_destroy did not properly free or zero some members, 239 - ev_default_destroy did not properly free or zero some members,
61 potentially causing crashes and memory corruption on repated 240 potentially causing crashes and memory corruption on repeated
62 ev_default_destroy/ev_default_loop calls. 241 ev_default_destroy/ev_default_loop calls.
63 - take advantage of signalfd on GNU/Linux systems. 242 - take advantage of signalfd on GNU/Linux systems.
64 - document that the signal mask might be in an unspecified 243 - document that the signal mask might be in an unspecified
65 state when using libev's signal handling. 244 state when using libev's signal handling.
66 - take advantage of some GNU/Linux calls to set cloexec/nonblock 245 - take advantage of some GNU/Linux calls to set cloexec/nonblock
… …
101 - correctly zero the idx values for arrays, so destroying and 280 - correctly zero the idx values for arrays, so destroying and
102 reinitialising the default loop actually works (patch by 281 reinitialising the default loop actually works (patch by
103 Malek Hadj-Ali). 282 Malek Hadj-Ali).
104 - implement ev_suspend and ev_resume. 283 - implement ev_suspend and ev_resume.
105 - new EV_CUSTOM revents flag for use by applications. 284 - new EV_CUSTOM revents flag for use by applications.
106 - add documentation section about priorites. 285 - add documentation section about priorities.
107 - add a glossary to the dcoumentation. 286 - add a glossary to the documentation.
108 - extend the ev_fork description slightly. 287 - extend the ev_fork description slightly.
109 - optimize a jump out of call_pending. 288 - optimize a jump out of call_pending.
110 289
1113.53 Sun Feb 15 02:38:20 CET 2009 2903.53 Sun Feb 15 02:38:20 CET 2009
112 - fix a bug in event pipe creation on win32 that would cause a 291 - fix a bug in event pipe creation on win32 that would cause a
… …
188 do similar changes for event.c. 367 do similar changes for event.c.
189 368
1903.45 Tue Oct 21 21:59:26 CEST 2008 3693.45 Tue Oct 21 21:59:26 CEST 2008
191 - disable inotify usage on linux <2.6.25, as it is broken 370 - disable inotify usage on linux <2.6.25, as it is broken
192 (reported by Yoann Vandoorselaere). 371 (reported by Yoann Vandoorselaere).
193 - ev_stat errornously would try to add inotify watchers 372 - ev_stat erroneously would try to add inotify watchers
194 even when inotify wasn't available (this should only 373 even when inotify wasn't available (this should only
195 have a performance impact). 374 have a performance impact).
196 - ev_once now passes both timeout and io to the callback if both 375 - ev_once now passes both timeout and io to the callback if both
197 occur concurrently, instead of giving timeouts precedence. 376 occur concurrently, instead of giving timeouts precedence.
198 - disable EV_USE_INOTIFY when sys/inotify.h is too old. 377 - disable EV_USE_INOTIFY when sys/inotify.h is too old.
… …
266 - enable inlining with gcc versions 2 and 3. 445 - enable inlining with gcc versions 2 and 3.
267 - work around broken poll implementations potentially 446 - work around broken poll implementations potentially
268 not clearing revents field in ev_poll (Brandon Black) 447 not clearing revents field in ev_poll (Brandon Black)
269 (no such systems are known at this time). 448 (no such systems are known at this time).
270 - work around a bug in realloc on openbsd and darwin, 449 - work around a bug in realloc on openbsd and darwin,
271 also makes the errornous valgrind complaints 450 also makes the erroneous valgrind complaints
272 go away (noted by various people). 451 go away (noted by various people).
273 - fix ev_async_pending, add c++ wrapper for ev_async 452 - fix ev_async_pending, add c++ wrapper for ev_async
274 (based on patch sent by Johannes Deisenhofer. 453 (based on patch sent by Johannes Deisenhofer).
275 - add sensible set method to ev::embed. 454 - add sensible set method to ev::embed.
276 - made integer constants type int in ev.h. 455 - made integer constants type int in ev.h.
277 456
2783.2 Wed Apr 2 17:11:19 CEST 2008 4573.2 Wed Apr 2 17:11:19 CEST 2008
279 - fix a 64 bit overflow issue in the select backend, 458 - fix a 64 bit overflow issue in the select backend,

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