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Comparing libev/Changes (file contents):
Revision 1.258 by root, Wed Apr 11 10:51:11 2012 UTC vs.
Revision 1.353 by root, Tue Dec 24 13:52:58 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: ev_loop_wakeup 3TODO: revisit 59.x timer in the light of modern powersaving
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 - the new timerfd code wrongly changed the priority of ther signal
7TODO: ^ OR use WSASend/WSARecv on the handle, which always works 7 fd watcher, which is usuallys harmless unless signal fds are
8TODO: throw() for most ev.h functions 8 also used (found via cpan tester service).
9 - support a lot more "uncommon" compile time configurations,
10 such as ev_embed enabled but ev_timer disabled.
11
124.31 Fri Dec 20 21:58:29 CET 2019
13 - handle backends with minimum wait time a bit better by not
14 waiting in the presence of already-expired timers
15 (behaviour reported by Felipe Gasper).
16 - new feature: use timerfd to detect timejumps quickly,
17 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
18 - document EV_USE_SIGNALFD feature macro.
19
204.30 (EV only)
21 - change non-autoconf test for __kernel_rwf_t by testing
22 LINUX_VERSION_CODE, the most direct test I could find.
23 - fix a bug in the io_uring backend that polled the wrong
24 backend fd, causing it to not work in many cases.
25
264.29 (EV only)
27 - add io uring autoconf and non-autoconf detection.
28 - disable io_uring when some header files are too old.
29
304.28 (EV only)
31 - linuxaio backend resulted in random memory corruption
32 when loop is forked.
33 - linuxaio backend might have tried to cancel an iocb
34 multiple times (was unable to trigger this).
35 - linuxaio backend now employs a generation counter to
36 avoid handling spurious events from cancelled requests.
37 - io_cancel can return EINTR, deal with it. also, assume
38 io_submit also returns EINTR.
39 - fix some other minor bugs in linuxaio backend.
40 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
41 - cleanup: replace expect_true/false and noinline by their
42 libecb counterparts.
43 - move syscall infrastructure from ev_linuxaio.c to ev.c.
44 - prepare io_uring integration.
45 - tweak ev_floor.
46 - epoll, poll, win32 Sleep and other places that use millisecond
47 reslution now all try to round up times.
48 - solaris port backend didn't compile.
49 - abstract time constants into their macros, for more flexibility.
50
514.27 Thu Jun 27 22:43:44 CEST 2019
52 - linux aio backend almost completely rewritten to work around its
53 limitations.
54 - linux aio backend now requires linux 4.19+.
55 - epoll backend now mandatory for linux aio backend.
56 - fail assertions more aggressively on invalid fd's detected
57 in the event loop, do not just silently fd_kill in case of
58 user error.
59 - ev_io_start/ev_io_stop now verify the watcher fd using
60 a syscall when EV_VERIFY is 2 or higher.
61
624.26 (EV only)
63 - update to libecb 0x00010006.
64 - new experimental linux aio backend (linux 4.18+).
65 - removed redundant 0-ptr check in ev_once.
66 - updated/extended ev_set_allocator documentation.
67 - replaced EMPTY2 macro by array_needsize_noinit.
68 - minor code cleanups.
69 - epoll backend now uses epoll_create1 also after fork.
70
714.25 Fri Dec 21 07:49:20 CET 2018
72 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
73 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
74 - move the darwin select workaround higher in ev.c, as newer versions of
75 darwin managed to break their broken select even more.
76 - ANDROID => __ANDROID__ (reported by enh@google.com).
77 - disable epoll_create1 on android because it has broken header files
78 and google is unwilling to fix them (reported by enh@google.com).
79 - avoid a minor compilation warning on win32.
80 - c++: remove deprecated dynamic throw() specifications.
81 - c++: improve the (unsupported) bad_loop exception class.
82 - backport perl ev_periodic example to C, untested.
83 - update libecb, biggets change is to include a memory fence
84 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
85 - minor autoconf/automake modernisation.
86
874.24 Wed Dec 28 05:19:55 CET 2016
88 - bump version to 4.24, as the release tarball inexplicably
89 didn't have the right version in ev.h, even though the cvs-tagged
90 version did have the right one (reported by Ales Teska).
91
924.23 Wed Nov 16 18:23:41 CET 2016
93 - move some declarations at the beginning to help certain retarded
94 microsoft compilers, even though their documentation claims
95 otherwise (reported by Ruslan Osmanov).
96
974.22 Sun Dec 20 22:11:50 CET 2015
98 - when epoll detects unremovable fds in the fd set, rebuild
99 only the epoll descriptor, not the signal pipe, to avoid
100 SIGPIPE in ev_async_send. This doesn't solve it on fork,
101 so document what needs to be done in ev_loop_fork
102 (analyzed by Benjamin Mahler).
103 - remove superfluous sys/timeb.h include on win32
104 (analyzed by Jason Madden).
105 - updated libecb.
106
1074.20 Sat Jun 20 13:01:43 CEST 2015
108 - prefer noexcept over throw () with C++ 11.
109 - update ecb.h due to incompatibilities with c11.
110 - fix a potential aliasing issue when reading and writing
111 watcher callbacks.
112
1134.19 Thu Sep 25 08:18:25 CEST 2014
114 - ev.h wasn't valid C++ anymore, which tripped compilers other than
115 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
116 C++ doesn't support typedefs for function pointers fully, so the affected
117 declarations have to spell out the types each time.
118 - when not using autoconf, tighten the check for clock_gettime and related
119 functionality.
120
1214.18 Fri Sep 5 17:55:26 CEST 2014
122 - events on files were not always generated properly with the
123 epoll backend (testcase by Assaf Inbal).
124 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
125 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
126 - use a reasonable fallback for EV_NSIG instead of erroring out
127 when we can't detect the signal set size.
128 - in the absence of autoconf, do not use the clock syscall
129 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
130 doing clock_gettime in userspace).
131 - ensure extern "C" function pointers are used for externally-visible
132 loop callbacks (not watcher callbacks yet).
133 - (ecb) work around memory barriers and volatile apparently both being
134 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
135
1364.15 Fri Mar 1 12:04:50 CET 2013
137 - destroying a non-default loop would stop the global waitpid
138 watcher (Denis Bilenko).
139 - queueing pending watchers of higher priority from a watcher now invokes
140 them in a timely fashion (reported by Denis Bilenko).
141 - add throw() to all libev functions that cannot throw exceptions, for
142 further code size decrease when compiling for C++.
143 - add throw () to callbacks that must not throw exceptions (allocator,
144 syserr, loop acquire/release, periodic reschedule cbs).
9 - fix event_base_loop return code, add event_get_callback, event_base_new, 145 - fix event_base_loop return code, add event_get_callback, event_base_new,
10 event_base_get_method calls to improve libevent 1.x emulation and add 146 event_base_get_method calls to improve libevent 1.x emulation and add
11 some libevent 2.x funcitonality (based on a patch by Jeff Davey). 147 some libevent 2.x functionality (based on a patch by Jeff Davey).
148 - add more memory fences to fix a bug reported by Jeff Davey. Better
149 be overfenced than underprotected.
12 - ev_run now returns a boolean status (true meaning watchers are 150 - ev_run now returns a boolean status (true meaning watchers are
13 still active). 151 still active).
14 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with 152 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
15 libev's EV_ERROR (reported by 191919). 153 libev's EV_ERROR (reported by 191919).
16 - (ecb) add memory fence support for xlC (Darin McBride). 154 - (ecb) add memory fence support for xlC (Darin McBride).
17 - (ecb) add memory fence support for gcc-mips (Anton Kirilov). 155 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
156 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
18 - work around some kernels losing file descriptors by leaking 157 - work around some kernels losing file descriptors by leaking
19 the kqueue descriptor in the child. 158 the kqueue descriptor in the child.
159 - work around linux inotify not reporting IN_ATTRIB changes for directories
160 in many cases.
161 - include sys/syscall.h instead of plain syscall.h.
162 - check for io watcher loops in ev_verify, check for the most
163 common reported usage bug in ev_io_start.
164 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
165 - always use WSASend/WSARecv directly on windows, hoping that this
166 works in all cases (unlike read/write/send/recv...).
167 - try to detect signals around a fork faster (test program by
168 Denis Bilenko).
169 - work around recent glibc versions that leak memory in realloc.
170 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
171 the watcher base set (loop) method.
172 - rewrite the async/signal pipe logic to always keep a valid fd, which
173 simplifies (and hopefully correctifies :) the race checking
174 on fork, at the cost of one extra fd.
175 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
176 inotify-supporting filesystems.
177 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
178 versions ignore it before
179 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
180 - add some untested android support.
181 - enum expressions must be of type int (reported by Juan Pablo L).
20 182
214.11 Sat Feb 4 19:52:39 CET 2012 1834.11 Sat Feb 4 19:52:39 CET 2012
22 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as 184 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
23 was documented already, but not implemented in the repeating case. 185 was documented already, but not implemented in the repeating case.
24 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. 186 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
… …
208 reinitialising the default loop actually works (patch by 370 reinitialising the default loop actually works (patch by
209 Malek Hadj-Ali). 371 Malek Hadj-Ali).
210 - implement ev_suspend and ev_resume. 372 - implement ev_suspend and ev_resume.
211 - new EV_CUSTOM revents flag for use by applications. 373 - new EV_CUSTOM revents flag for use by applications.
212 - add documentation section about priorities. 374 - add documentation section about priorities.
213 - add a glossary to the dcoumentation. 375 - add a glossary to the documentation.
214 - extend the ev_fork description slightly. 376 - extend the ev_fork description slightly.
215 - optimize a jump out of call_pending. 377 - optimize a jump out of call_pending.
216 378
2173.53 Sun Feb 15 02:38:20 CET 2009 3793.53 Sun Feb 15 02:38:20 CET 2009
218 - fix a bug in event pipe creation on win32 that would cause a 380 - fix a bug in event pipe creation on win32 that would cause a

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