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Comparing libev/Changes (file contents):
Revision 1.265 by root, Thu May 3 16:00:47 2012 UTC vs.
Revision 1.369 by root, Wed May 19 06:15:50 2021 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 3TODO: for next ABI/API change, consider moving EV__IOFDSSET into io->fd instead and provide a getter.
4TODO: EV_STANDALONE == NO_HASSEL (do not use clock_gettime in ev_standalone) 4TODO: document EV_TSTAMP_T
5 5
6TODO: document WSA_EV_USE_SOCKET in win32 part 6 - libev did not compile on systems lacking clock_gettime.
7TODO: ^ OR use WSASend/WSARecv on the handle, which always works 7 - due to a logic bug, timerfd availability did not always translate
8TODO: assert on fd watcher linked list pointing to itself 8 into fewer wakeups - libev is now more aggressive in using
9TODO: faq, process a thing in each iteration 9 longer sleeps, even when timerfd is not in use.
10TODO: abuse idle watchers for their side effect 10
11TODO: abuse check watchers for their side effect 114.33 Wed Mar 18 13:22:29 CET 2020
12 - no changes w.r.t. 4.32.
13
144.32 (EV only)
15 - the 4.31 timerfd code wrongly changed the priority of the signal
16 fd watcher, which is usually harmless unless signal fds are
17 also used (found via cpan tester service).
18 - the documentation wrongly claimed that user may modify fd and events
19 members in io watchers when the watcher was stopped
20 (found by b_jonas).
21 - new ev_io_modify mutator which changes only the events member,
22 which can be faster. also added ev::io::set (int events) method
23 to ev++.h.
24 - officially allow a zero events mask for io watchers. this should
25 work with older libev versions as well but was not officially
26 allowed before.
27 - do not wake up every minute when timerfd is used to detect timejumps.
28 - do not wake up every minute when periodics are disabled and we have
29 a monotonic clock.
30 - support a lot more "uncommon" compile time configurations,
31 such as ev_embed enabled but ev_timer disabled.
32 - use a start/stop wrapper class to reduce code duplication in
33 ev++.h and make it needlessly more c++-y.
34 - the linux aio backend is no longer compiled in by default.
35 - update to libecb version 0x00010008.
36
374.31 Fri Dec 20 21:58:29 CET 2019
38 - handle backends with minimum wait time a bit better by not
39 waiting in the presence of already-expired timers
40 (behaviour reported by Felipe Gasper).
41 - new feature: use timerfd to detect timejumps quickly,
42 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
43 - document EV_USE_SIGNALFD feature macro.
44
454.30 (EV only)
46 - change non-autoconf test for __kernel_rwf_t by testing
47 LINUX_VERSION_CODE, the most direct test I could find.
48 - fix a bug in the io_uring backend that polled the wrong
49 backend fd, causing it to not work in many cases.
50
514.29 (EV only)
52 - add io uring autoconf and non-autoconf detection.
53 - disable io_uring when some header files are too old.
54
554.28 (EV only)
56 - linuxaio backend resulted in random memory corruption
57 when loop is forked.
58 - linuxaio backend might have tried to cancel an iocb
59 multiple times (was unable to trigger this).
60 - linuxaio backend now employs a generation counter to
61 avoid handling spurious events from cancelled requests.
62 - io_cancel can return EINTR, deal with it. also, assume
63 io_submit also returns EINTR.
64 - fix some other minor bugs in linuxaio backend.
65 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
66 - cleanup: replace expect_true/false and noinline by their
67 libecb counterparts.
68 - move syscall infrastructure from ev_linuxaio.c to ev.c.
69 - prepare io_uring integration.
70 - tweak ev_floor.
71 - epoll, poll, win32 Sleep and other places that use millisecond
72 reslution now all try to round up times.
73 - solaris port backend didn't compile.
74 - abstract time constants into their macros, for more flexibility.
75
764.27 Thu Jun 27 22:43:44 CEST 2019
77 - linux aio backend almost completely rewritten to work around its
78 limitations.
79 - linux aio backend now requires linux 4.19+.
80 - epoll backend now mandatory for linux aio backend.
81 - fail assertions more aggressively on invalid fd's detected
82 in the event loop, do not just silently fd_kill in case of
83 user error.
84 - ev_io_start/ev_io_stop now verify the watcher fd using
85 a syscall when EV_VERIFY is 2 or higher.
86
874.26 (EV only)
88 - update to libecb 0x00010006.
89 - new experimental linux aio backend (linux 4.18+).
90 - removed redundant 0-ptr check in ev_once.
91 - updated/extended ev_set_allocator documentation.
92 - replaced EMPTY2 macro by array_needsize_noinit.
93 - minor code cleanups.
94 - epoll backend now uses epoll_create1 also after fork.
95
964.25 Fri Dec 21 07:49:20 CET 2018
97 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
98 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
99 - move the darwin select workaround higher in ev.c, as newer versions of
100 darwin managed to break their broken select even more.
101 - ANDROID => __ANDROID__ (reported by enh@google.com).
102 - disable epoll_create1 on android because it has broken header files
103 and google is unwilling to fix them (reported by enh@google.com).
104 - avoid a minor compilation warning on win32.
105 - c++: remove deprecated dynamic throw() specifications.
106 - c++: improve the (unsupported) bad_loop exception class.
107 - backport perl ev_periodic example to C, untested.
108 - update libecb, biggets change is to include a memory fence
109 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
110 - minor autoconf/automake modernisation.
111
1124.24 Wed Dec 28 05:19:55 CET 2016
113 - bump version to 4.24, as the release tarball inexplicably
114 didn't have the right version in ev.h, even though the cvs-tagged
115 version did have the right one (reported by Ales Teska).
116
1174.23 Wed Nov 16 18:23:41 CET 2016
118 - move some declarations at the beginning to help certain retarded
119 microsoft compilers, even though their documentation claims
120 otherwise (reported by Ruslan Osmanov).
121
1224.22 Sun Dec 20 22:11:50 CET 2015
123 - when epoll detects unremovable fds in the fd set, rebuild
124 only the epoll descriptor, not the signal pipe, to avoid
125 SIGPIPE in ev_async_send. This doesn't solve it on fork,
126 so document what needs to be done in ev_loop_fork
127 (analyzed by Benjamin Mahler).
128 - remove superfluous sys/timeb.h include on win32
129 (analyzed by Jason Madden).
130 - updated libecb.
131
1324.20 Sat Jun 20 13:01:43 CEST 2015
133 - prefer noexcept over throw () with C++ 11.
134 - update ecb.h due to incompatibilities with c11.
135 - fix a potential aliasing issue when reading and writing
136 watcher callbacks.
137
1384.19 Thu Sep 25 08:18:25 CEST 2014
139 - ev.h wasn't valid C++ anymore, which tripped compilers other than
140 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
141 C++ doesn't support typedefs for function pointers fully, so the affected
142 declarations have to spell out the types each time.
143 - when not using autoconf, tighten the check for clock_gettime and related
144 functionality.
145
1464.18 Fri Sep 5 17:55:26 CEST 2014
147 - events on files were not always generated properly with the
148 epoll backend (testcase by Assaf Inbal).
149 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
150 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
151 - use a reasonable fallback for EV_NSIG instead of erroring out
152 when we can't detect the signal set size.
153 - in the absence of autoconf, do not use the clock syscall
154 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
155 doing clock_gettime in userspace).
156 - ensure extern "C" function pointers are used for externally-visible
157 loop callbacks (not watcher callbacks yet).
158 - (ecb) work around memory barriers and volatile apparently both being
159 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
160
1614.15 Fri Mar 1 12:04:50 CET 2013
162 - destroying a non-default loop would stop the global waitpid
163 watcher (Denis Bilenko).
164 - queueing pending watchers of higher priority from a watcher now invokes
165 them in a timely fashion (reported by Denis Bilenko).
12 - add throw() to all libev functions that cannot throw exceptions, for 166 - add throw() to all libev functions that cannot throw exceptions, for
13 further code size decrease when compiling for C++. 167 further code size decrease when compiling for C++.
14 - add throw () to callbacks that must not throw exceptions (allocator, 168 - add throw () to callbacks that must not throw exceptions (allocator,
15 syserr, loop acquire/release, periodic reschedule cbs). 169 syserr, loop acquire/release, periodic reschedule cbs).
16 - fix event_base_loop return code, add event_get_callback, event_base_new, 170 - fix event_base_loop return code, add event_get_callback, event_base_new,
17 event_base_get_method calls to improve libevent 1.x emulation and add 171 event_base_get_method calls to improve libevent 1.x emulation and add
18 some libevent 2.x funcitonality (based on a patch by Jeff Davey). 172 some libevent 2.x functionality (based on a patch by Jeff Davey).
19 - add more memory fences to fix a bug reported by Jeff Davey. Better 173 - add more memory fences to fix a bug reported by Jeff Davey. Better
20 be overfenced than underprotected. 174 be overfenced than underprotected.
21 - ev_run now returns a boolean status (true meaning watchers are 175 - ev_run now returns a boolean status (true meaning watchers are
22 still active). 176 still active).
23 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with 177 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
… …
25 - (ecb) add memory fence support for xlC (Darin McBride). 179 - (ecb) add memory fence support for xlC (Darin McBride).
26 - (ecb) add memory fence support for gcc-mips (Anton Kirilov). 180 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
27 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber). 181 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
28 - work around some kernels losing file descriptors by leaking 182 - work around some kernels losing file descriptors by leaking
29 the kqueue descriptor in the child. 183 the kqueue descriptor in the child.
184 - work around linux inotify not reporting IN_ATTRIB changes for directories
185 in many cases.
30 - include sys/syscall.h instead of plain syscall.h. 186 - include sys/syscall.h instead of plain syscall.h.
187 - check for io watcher loops in ev_verify, check for the most
188 common reported usage bug in ev_io_start.
189 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
190 - always use WSASend/WSARecv directly on windows, hoping that this
191 works in all cases (unlike read/write/send/recv...).
192 - try to detect signals around a fork faster (test program by
193 Denis Bilenko).
194 - work around recent glibc versions that leak memory in realloc.
195 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
196 the watcher base set (loop) method.
197 - rewrite the async/signal pipe logic to always keep a valid fd, which
198 simplifies (and hopefully correctifies :) the race checking
199 on fork, at the cost of one extra fd.
200 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
201 inotify-supporting filesystems.
202 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
203 versions ignore it before
204 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
205 - add some untested android support.
206 - enum expressions must be of type int (reported by Juan Pablo L).
31 207
324.11 Sat Feb 4 19:52:39 CET 2012 2084.11 Sat Feb 4 19:52:39 CET 2012
33 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as 209 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
34 was documented already, but not implemented in the repeating case. 210 was documented already, but not implemented in the repeating case.
35 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. 211 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
… …
219 reinitialising the default loop actually works (patch by 395 reinitialising the default loop actually works (patch by
220 Malek Hadj-Ali). 396 Malek Hadj-Ali).
221 - implement ev_suspend and ev_resume. 397 - implement ev_suspend and ev_resume.
222 - new EV_CUSTOM revents flag for use by applications. 398 - new EV_CUSTOM revents flag for use by applications.
223 - add documentation section about priorities. 399 - add documentation section about priorities.
224 - add a glossary to the dcoumentation. 400 - add a glossary to the documentation.
225 - extend the ev_fork description slightly. 401 - extend the ev_fork description slightly.
226 - optimize a jump out of call_pending. 402 - optimize a jump out of call_pending.
227 403
2283.53 Sun Feb 15 02:38:20 CET 2009 4043.53 Sun Feb 15 02:38:20 CET 2009
229 - fix a bug in event pipe creation on win32 that would cause a 405 - fix a bug in event pipe creation on win32 that would cause a

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