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Comparing libev/Changes (file contents):
Revision 1.192 by root, Fri Oct 22 05:57:55 2010 UTC vs.
Revision 1.337 by root, Mon Jul 1 21:47:42 2019 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: include ev_xyz_start in each example? 3TODO: revisit 59.x timer in the light of mdoenr powersaving
4 - linuxaio backend might have tried to cancel an iocb
5 multiple times (was unable to trigger this).
6 - io_cancel can return EINTR, deal with it. also, assume
7 io_asubmit also retursn EINTR.
8 - cleanup: replace expect_true/false and noinline by their
9 libecb counterparts.
10 - move syscall infrastructure from ev_linuxaio.c to ev.c.
11 - prepare io_uring integration.
12
134.27 Thu Jun 27 22:43:44 CEST 2019
14 - linux aio backend almost completely rewritten to work around its
15 limitations.
16 - linux aio backend now requires linux 4.19+.
17 - epoll backend now mandatory for linux aio backend.
18 - fail assertions more aggressively on invalid fd's detected
19 in the event loop, do not just silently fd_kill in case of
20 user error.
21 - ev_io_start/ev_io_stop now verify the watcher fd using
22 a syscall when EV_VERIFY is 2 or higher.
23
244.26 (EV only)
25 - update to libecb 0x00010006.
26 - new experimental linux aio backend (linux 4.18+).
27 - removed redundant 0-ptr check in ev_once.
28 - updated/extended ev_set_allocator documentation.
29 - replaced EMPTY2 macro by array_needsize_noinit.
30 - minor code cleanups.
31 - epoll backend now uses epoll_create1 also after fork.
32
334.25 Fri Dec 21 07:49:20 CET 2018
34 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
35 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
36 - move the darwin select workaround highe rin ev.c, as newer versions of
37 darwin managed to break their broken select even more.
38 - ANDROID => __ANDROID__ (reported by enh@google.com).
39 - disable epoll_create1 on android because it has broken header files
40 and google is unwilling to fix them (reported by enh@google.com).
41 - avoid a minor compilation warning on win32.
42 - c++: remove deprecated dynamic throw() specifications.
43 - c++: improve the (unsupported) bad_loop exception class.
44 - backport perl ev_periodic example to C, untested.
45 - update libecb, biggets change is to include a memory fence
46 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
47 - minor autoconf/automake modernisation.
48
494.24 Wed Dec 28 05:19:55 CET 2016
50 - bump version to 4.24, as the release tarball inexplicably
51 didn't have the right version in ev.h, even though the cvs-tagged
52 version did have the right one (reported by Ales Teska).
53
544.23 Wed Nov 16 18:23:41 CET 2016
55 - move some declarations at the beginning to help certain retarded
56 microsoft compilers, even though their documentation claims
57 otherwise (reported by Ruslan Osmanov).
58
594.22 Sun Dec 20 22:11:50 CET 2015
60 - when epoll detects unremovable fds in the fd set, rebuild
61 only the epoll descriptor, not the signal pipe, to avoid
62 SIGPIPE in ev_async_send. This doesn't solve it on fork,
63 so document what needs to be done in ev_loop_fork
64 (analyzed by Benjamin Mahler).
65 - remove superfluous sys/timeb.h include on win32
66 (analyzed by Jason Madden).
67 - updated libecb.
68
694.20 Sat Jun 20 13:01:43 CEST 2015
70 - prefer noexcept over throw () with C++ 11.
71 - update ecb.h due to incompatibilities with c11.
72 - fix a potential aliasing issue when reading and writing
73 watcher callbacks.
74
754.19 Thu Sep 25 08:18:25 CEST 2014
76 - ev.h wasn't valid C++ anymore, which tripped compilers other than
77 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
78 C++ doesn't support typedefs for function pointers fully, so the affected
79 declarations have to spell out the types each time.
80 - when not using autoconf, tighten the check for clock_gettime and related
81 functionality.
82
834.18 Fri Sep 5 17:55:26 CEST 2014
84 - events on files were not always generated properly with the
85 epoll backend (testcase by Assaf Inbal).
86 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
87 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
88 - use a reasonable fallback for EV_NSIG instead of erroring out
89 when we can't detect the signal set size.
90 - in the absence of autoconf, do not use the clock syscall
91 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
92 doing clock_gettime in userspace).
93 - ensure extern "C" function pointers are used for externally-visible
94 loop callbacks (not watcher callbacks yet).
95 - (ecb) work around memory barriers and volatile apparently both being
96 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
97
984.15 Fri Mar 1 12:04:50 CET 2013
99 - destroying a non-default loop would stop the global waitpid
100 watcher (Denis Bilenko).
101 - queueing pending watchers of higher priority from a watcher now invokes
102 them in a timely fashion (reported by Denis Bilenko).
103 - add throw() to all libev functions that cannot throw exceptions, for
104 further code size decrease when compiling for C++.
105 - add throw () to callbacks that must not throw exceptions (allocator,
106 syserr, loop acquire/release, periodic reschedule cbs).
107 - fix event_base_loop return code, add event_get_callback, event_base_new,
108 event_base_get_method calls to improve libevent 1.x emulation and add
109 some libevent 2.x functionality (based on a patch by Jeff Davey).
110 - add more memory fences to fix a bug reported by Jeff Davey. Better
111 be overfenced than underprotected.
112 - ev_run now returns a boolean status (true meaning watchers are
113 still active).
114 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
115 libev's EV_ERROR (reported by 191919).
116 - (ecb) add memory fence support for xlC (Darin McBride).
117 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
118 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
119 - work around some kernels losing file descriptors by leaking
120 the kqueue descriptor in the child.
121 - work around linux inotify not reporting IN_ATTRIB changes for directories
122 in many cases.
123 - include sys/syscall.h instead of plain syscall.h.
124 - check for io watcher loops in ev_verify, check for the most
125 common reported usage bug in ev_io_start.
126 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
127 - always use WSASend/WSARecv directly on windows, hoping that this
128 works in all cases (unlike read/write/send/recv...).
129 - try to detect signals around a fork faster (test program by
130 Denis Bilenko).
131 - work around recent glibc versions that leak memory in realloc.
132 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
133 the watcher base set (loop) method.
134 - rewrite the async/signal pipe logic to always keep a valid fd, which
135 simplifies (and hopefully correctifies :) the race checking
136 on fork, at the cost of one extra fd.
137 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
138 inotify-supporting filesystems.
139 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
140 versions ignore it before
141 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
142 - add some untested android support.
143 - enum expressions must be of type int (reported by Juan Pablo L).
144
1454.11 Sat Feb 4 19:52:39 CET 2012
146 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
147 was documented already, but not implemented in the repeating case.
148 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
149 - fix a race where the workaround against the epoll fork bugs
150 caused signals to not be handled anymore.
151 - correct backend_fudge for most backends, and implement a windows
152 specific workaround to avoid looping because we call both
153 select and Sleep, both with different time resolutions.
154 - document range and guarantees of ev_sleep.
155 - document reasonable ranges for periodics interval and offset.
156 - rename backend_fudge to backend_mintime to avoid future confusion :)
157 - change the default periodic reschedule function to hopefully be more
158 exact and correct even in corner cases or in the far future.
159 - do not rely on -lm anymore: use it when available but use our
160 own floor () if it is missing. This should make it easier to embed,
161 as no external libraries are required.
162 - strategically import macros from libecb and mark rarely-used functions
163 as cache-cold (saving almost 2k code size on typical amd64 setups).
164 - add Symbols.ev and Symbols.event files, that were missing.
165 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
166 - fix #3 "be smart about timeouts" to not "deadlock" when
167 timeout == now, also improve the section overall.
168 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
169 - support new EV_API_STATIC mode to make all libev symbols
170 static.
171 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
172 were empty.
173
1744.04 Wed Feb 16 09:01:51 CET 2011
175 - fix two problems in the native win32 backend, where reuse of fd's
176 with different underlying handles caused handles not to be removed
177 or added to the select set (analyzed and tested by Bert Belder).
178 - do no rely on ceil() in ev_e?poll.c.
179 - backport libev to HP-UX versions before 11 v3.
180 - configure did not detect nanosleep and clock_gettime properly when
181 they are available in the libc (as opposed to -lrt).
182
1834.03 Tue Jan 11 14:37:25 CET 2011
184 - officially support polling files with all backends.
185 - support files, /dev/zero etc. the same way as select in the epoll
186 backend, by generating events on our own.
187 - ports backend: work around solaris bug 6874410 and many related ones
188 (EINTR, maybe more), with no performance loss (note that the solaris
189 bug report is actually wrong, reality is far more bizarre and broken
190 than that).
191 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
192 #ifdef to test for them.
193 - new (experimental) function: ev_feed_signal.
194 - new (to become default) EVFLAG_NOSIGMASK flag.
195 - new EVBACKEND_MASK symbol.
196 - updated COMMON IDIOMS SECTION.
197
1984.01 Fri Nov 5 21:51:29 CET 2010
199 - automake fucked it up, apparently, --add-missing -f is not quite enough
200 to make it update its files, so 4.00 didn't install ev++.h and
201 event.h on make install. grrr.
202 - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
203 - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
204 - use "(libev) " prefix for all libev error messages now.
205
2064.00 Mon Oct 25 12:32:12 CEST 2010
4 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading. 207 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
5 - ev_embed_stop did not correctly stop the watcher (very good 208 - ev_embed_stop did not correctly stop the watcher (very good
6 testcase by Vladimir Timofeev). 209 testcase by Vladimir Timofeev).
7 - ev_run will now always update the current loop time - it erroneously 210 - ev_run will now always update the current loop time - it erroneously
8 didn't when idle watchers were active, causing timers not to fire. 211 didn't when idle watchers were active, causing timers not to fire.
… …
10 in the libevent emulation (testcase by Péter Szabó). 213 in the libevent emulation (testcase by Péter Szabó).
11 - applied win32 fixes by Michael Lenaghan (also James Mansion). 214 - applied win32 fixes by Michael Lenaghan (also James Mansion).
12 - replace EV_MINIMAL by EV_FEATURES. 215 - replace EV_MINIMAL by EV_FEATURES.
13 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it 216 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
14 seems the former is *much* faster than the latter. 217 seems the former is *much* faster than the latter.
218 - linux kernel version detection (for inotify bug workarounds)
219 did not work properly.
15 - reduce the number of spurious wake-ups with the ports backend. 220 - reduce the number of spurious wake-ups with the ports backend.
16 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu). 221 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
17 - do async init within ev_async_start, not ev_async_set, which avoids 222 - do async init within ev_async_start, not ev_async_set, which avoids
18 an API quirk where the set function must be called in the C++ API 223 an API quirk where the set function must be called in the C++ API
19 even when there is nothing to set. 224 even when there is nothing to set.
20 - add (undocumented) EV_ENABLE when adding events with kqueue, 225 - add (undocumented) EV_ENABLE when adding events with kqueue,
21 this might help with OS X, which seems to need it despite documenting 226 this might help with OS X, which seems to need it despite documenting
22 not to need it (helpfully pointed out by Tilghman Lesher). 227 not to need it (helpfully pointed out by Tilghman Lesher).
23 - do not use poll by default on freebsd, it's broken (what isn't 228 - do not use poll by default on freebsd, it's broken (what isn't
24 on freebsd...). 229 on freebsd...).
230 - allow to embed epoll on kernels >= 2.6.32.
25 - configure now prepends -O3, not appends it, so one can still 231 - configure now prepends -O3, not appends it, so one can still
26 override it. 232 override it.
27 - ev.pod: greatly expanded the portability section, added a porting 233 - ev.pod: greatly expanded the portability section, added a porting
28 section, a description of watcher states and made lots of minor fixes. 234 section, a description of watcher states and made lots of minor fixes.
29 - disable poll backend on AIX, the poll header spams the namespace 235 - disable poll backend on AIX, the poll header spams the namespace
… …
37 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings. 243 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
38 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs. 244 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
39 - add section on accept() problems to the manpage. 245 - add section on accept() problems to the manpage.
40 - rename EV_TIMEOUT to EV_TIMER. 246 - rename EV_TIMEOUT to EV_TIMER.
41 - rename ev_loop_count/depth/verify/loop/unloop. 247 - rename ev_loop_count/depth/verify/loop/unloop.
248 - remove ev_default_destroy and ev_default_fork.
42 - switch to two-digit minor version. 249 - switch to two-digit minor version.
43 - work around an apparent gentoo compiler bug. 250 - work around an apparent gentoo compiler bug.
44 - define _DARWIN_UNLIMITED_SELECT. just so. 251 - define _DARWIN_UNLIMITED_SELECT. just so.
45 - use enum instead of #define for most constants. 252 - use enum instead of #define for most constants.
46 - improve compatibility to older C++ compilers. 253 - improve compatibility to older C++ compilers.
47 - ev_run/ev_default_loop/ev_break/ev_loop_new have now default 254 - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
48 arguments when compiled as C++. 255 default arguments when compiled as C++.
256 - enable automake dependency tracking.
257 - ev_loop_new no longer leaks memory when loop creation failed.
258 - new ev_cleanup watcher type.
49 259
503.9 Thu Dec 31 07:59:59 CET 2009 2603.9 Thu Dec 31 07:59:59 CET 2009
51 - signalfd is no longer used by default and has to be requested 261 - signalfd is no longer used by default and has to be requested
52 explicitly - this means that easy to catch bugs become hard to 262 explicitly - this means that easy to catch bugs become hard to
53 catch race conditions, but the users have spoken. 263 catch race conditions, but the users have spoken.
54 - point out the unspecified signal mask in the documentation, and 264 - point out the unspecified signal mask in the documentation, and
55 that this is a race condition regardless of EV_SIGNALFD. 265 that this is a race condition regardless of EV_SIGNALFD.
56 - backport inotify code to C89. 266 - backport inotify code to C89.
57 - inotify file descriptors could leak into child processes. 267 - inotify file descriptors could leak into child processes.
58 - ev_stat watchers could keep an errornous extra ref on the loop, 268 - ev_stat watchers could keep an erroneous extra ref on the loop,
59 preventing exit when unregistering all watchers (testcases 269 preventing exit when unregistering all watchers (testcases
60 provided by ry@tinyclouds.org). 270 provided by ry@tinyclouds.org).
61 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration 271 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
62 symbols to make it easier for apps to do their own fd management. 272 symbols to make it easier for apps to do their own fd management.
63 - support EV_IDLE_ENABLE being disabled in ev++.h 273 - support EV_IDLE_ENABLE being disabled in ev++.h
… …
121 - correctly zero the idx values for arrays, so destroying and 331 - correctly zero the idx values for arrays, so destroying and
122 reinitialising the default loop actually works (patch by 332 reinitialising the default loop actually works (patch by
123 Malek Hadj-Ali). 333 Malek Hadj-Ali).
124 - implement ev_suspend and ev_resume. 334 - implement ev_suspend and ev_resume.
125 - new EV_CUSTOM revents flag for use by applications. 335 - new EV_CUSTOM revents flag for use by applications.
126 - add documentation section about priorites. 336 - add documentation section about priorities.
127 - add a glossary to the dcoumentation. 337 - add a glossary to the documentation.
128 - extend the ev_fork description slightly. 338 - extend the ev_fork description slightly.
129 - optimize a jump out of call_pending. 339 - optimize a jump out of call_pending.
130 340
1313.53 Sun Feb 15 02:38:20 CET 2009 3413.53 Sun Feb 15 02:38:20 CET 2009
132 - fix a bug in event pipe creation on win32 that would cause a 342 - fix a bug in event pipe creation on win32 that would cause a

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