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Comparing libev/Changes (file contents):
Revision 1.265 by root, Thu May 3 16:00:47 2012 UTC vs.
Revision 1.356 by root, Tue Jan 21 23:52:35 2020 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: ^ maybe just increase it when timerfd, modern linux only thing that counts?
5TODO: document EV_TSTAMP_T
5 6
6TODO: document WSA_EV_USE_SOCKET in win32 part 7TODO: add ev_io_set_events, or ev_io_modify, or ev_io_change, or..., without IOFDSET
7TODO: ^ OR use WSASend/WSARecv on the handle, which always works 8 - the 4.31 timerfd code wrongly changes the priority of the signal
8TODO: assert on fd watcher linked list pointing to itself 9 fd watcher, which is usually harmless unless signal fds are
9TODO: faq, process a thing in each iteration 10 also used (found via cpan tester service).
10TODO: abuse idle watchers for their side effect 11 - do not wake up every minute when timerfd is used to detect timejumps.
11TODO: abuse check watchers for their side effect 12 - support a lot more "uncommon" compile time configurations,
13 such as ev_embed enabled but ev_timer disabled.
14 - the linux aio backend is no longer compiled in by default.
15 - update to libecb version 0x00010008.
16
174.31 Fri Dec 20 21:58:29 CET 2019
18 - handle backends with minimum wait time a bit better by not
19 waiting in the presence of already-expired timers
20 (behaviour reported by Felipe Gasper).
21 - new feature: use timerfd to detect timejumps quickly,
22 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
23 - document EV_USE_SIGNALFD feature macro.
24
254.30 (EV only)
26 - change non-autoconf test for __kernel_rwf_t by testing
27 LINUX_VERSION_CODE, the most direct test I could find.
28 - fix a bug in the io_uring backend that polled the wrong
29 backend fd, causing it to not work in many cases.
30
314.29 (EV only)
32 - add io uring autoconf and non-autoconf detection.
33 - disable io_uring when some header files are too old.
34
354.28 (EV only)
36 - linuxaio backend resulted in random memory corruption
37 when loop is forked.
38 - linuxaio backend might have tried to cancel an iocb
39 multiple times (was unable to trigger this).
40 - linuxaio backend now employs a generation counter to
41 avoid handling spurious events from cancelled requests.
42 - io_cancel can return EINTR, deal with it. also, assume
43 io_submit also returns EINTR.
44 - fix some other minor bugs in linuxaio backend.
45 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
46 - cleanup: replace expect_true/false and noinline by their
47 libecb counterparts.
48 - move syscall infrastructure from ev_linuxaio.c to ev.c.
49 - prepare io_uring integration.
50 - tweak ev_floor.
51 - epoll, poll, win32 Sleep and other places that use millisecond
52 reslution now all try to round up times.
53 - solaris port backend didn't compile.
54 - abstract time constants into their macros, for more flexibility.
55
564.27 Thu Jun 27 22:43:44 CEST 2019
57 - linux aio backend almost completely rewritten to work around its
58 limitations.
59 - linux aio backend now requires linux 4.19+.
60 - epoll backend now mandatory for linux aio backend.
61 - fail assertions more aggressively on invalid fd's detected
62 in the event loop, do not just silently fd_kill in case of
63 user error.
64 - ev_io_start/ev_io_stop now verify the watcher fd using
65 a syscall when EV_VERIFY is 2 or higher.
66
674.26 (EV only)
68 - update to libecb 0x00010006.
69 - new experimental linux aio backend (linux 4.18+).
70 - removed redundant 0-ptr check in ev_once.
71 - updated/extended ev_set_allocator documentation.
72 - replaced EMPTY2 macro by array_needsize_noinit.
73 - minor code cleanups.
74 - epoll backend now uses epoll_create1 also after fork.
75
764.25 Fri Dec 21 07:49:20 CET 2018
77 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
78 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
79 - move the darwin select workaround higher in ev.c, as newer versions of
80 darwin managed to break their broken select even more.
81 - ANDROID => __ANDROID__ (reported by enh@google.com).
82 - disable epoll_create1 on android because it has broken header files
83 and google is unwilling to fix them (reported by enh@google.com).
84 - avoid a minor compilation warning on win32.
85 - c++: remove deprecated dynamic throw() specifications.
86 - c++: improve the (unsupported) bad_loop exception class.
87 - backport perl ev_periodic example to C, untested.
88 - update libecb, biggets change is to include a memory fence
89 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
90 - minor autoconf/automake modernisation.
91
924.24 Wed Dec 28 05:19:55 CET 2016
93 - bump version to 4.24, as the release tarball inexplicably
94 didn't have the right version in ev.h, even though the cvs-tagged
95 version did have the right one (reported by Ales Teska).
96
974.23 Wed Nov 16 18:23:41 CET 2016
98 - move some declarations at the beginning to help certain retarded
99 microsoft compilers, even though their documentation claims
100 otherwise (reported by Ruslan Osmanov).
101
1024.22 Sun Dec 20 22:11:50 CET 2015
103 - when epoll detects unremovable fds in the fd set, rebuild
104 only the epoll descriptor, not the signal pipe, to avoid
105 SIGPIPE in ev_async_send. This doesn't solve it on fork,
106 so document what needs to be done in ev_loop_fork
107 (analyzed by Benjamin Mahler).
108 - remove superfluous sys/timeb.h include on win32
109 (analyzed by Jason Madden).
110 - updated libecb.
111
1124.20 Sat Jun 20 13:01:43 CEST 2015
113 - prefer noexcept over throw () with C++ 11.
114 - update ecb.h due to incompatibilities with c11.
115 - fix a potential aliasing issue when reading and writing
116 watcher callbacks.
117
1184.19 Thu Sep 25 08:18:25 CEST 2014
119 - ev.h wasn't valid C++ anymore, which tripped compilers other than
120 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
121 C++ doesn't support typedefs for function pointers fully, so the affected
122 declarations have to spell out the types each time.
123 - when not using autoconf, tighten the check for clock_gettime and related
124 functionality.
125
1264.18 Fri Sep 5 17:55:26 CEST 2014
127 - events on files were not always generated properly with the
128 epoll backend (testcase by Assaf Inbal).
129 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
130 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
131 - use a reasonable fallback for EV_NSIG instead of erroring out
132 when we can't detect the signal set size.
133 - in the absence of autoconf, do not use the clock syscall
134 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
135 doing clock_gettime in userspace).
136 - ensure extern "C" function pointers are used for externally-visible
137 loop callbacks (not watcher callbacks yet).
138 - (ecb) work around memory barriers and volatile apparently both being
139 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
140
1414.15 Fri Mar 1 12:04:50 CET 2013
142 - destroying a non-default loop would stop the global waitpid
143 watcher (Denis Bilenko).
144 - queueing pending watchers of higher priority from a watcher now invokes
145 them in a timely fashion (reported by Denis Bilenko).
12 - add throw() to all libev functions that cannot throw exceptions, for 146 - add throw() to all libev functions that cannot throw exceptions, for
13 further code size decrease when compiling for C++. 147 further code size decrease when compiling for C++.
14 - add throw () to callbacks that must not throw exceptions (allocator, 148 - add throw () to callbacks that must not throw exceptions (allocator,
15 syserr, loop acquire/release, periodic reschedule cbs). 149 syserr, loop acquire/release, periodic reschedule cbs).
16 - fix event_base_loop return code, add event_get_callback, event_base_new, 150 - 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 151 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). 152 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 153 - add more memory fences to fix a bug reported by Jeff Davey. Better
20 be overfenced than underprotected. 154 be overfenced than underprotected.
21 - ev_run now returns a boolean status (true meaning watchers are 155 - ev_run now returns a boolean status (true meaning watchers are
22 still active). 156 still active).
23 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with 157 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
… …
25 - (ecb) add memory fence support for xlC (Darin McBride). 159 - (ecb) add memory fence support for xlC (Darin McBride).
26 - (ecb) add memory fence support for gcc-mips (Anton Kirilov). 160 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
27 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber). 161 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
28 - work around some kernels losing file descriptors by leaking 162 - work around some kernels losing file descriptors by leaking
29 the kqueue descriptor in the child. 163 the kqueue descriptor in the child.
164 - work around linux inotify not reporting IN_ATTRIB changes for directories
165 in many cases.
30 - include sys/syscall.h instead of plain syscall.h. 166 - include sys/syscall.h instead of plain syscall.h.
167 - check for io watcher loops in ev_verify, check for the most
168 common reported usage bug in ev_io_start.
169 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
170 - always use WSASend/WSARecv directly on windows, hoping that this
171 works in all cases (unlike read/write/send/recv...).
172 - try to detect signals around a fork faster (test program by
173 Denis Bilenko).
174 - work around recent glibc versions that leak memory in realloc.
175 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
176 the watcher base set (loop) method.
177 - rewrite the async/signal pipe logic to always keep a valid fd, which
178 simplifies (and hopefully correctifies :) the race checking
179 on fork, at the cost of one extra fd.
180 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
181 inotify-supporting filesystems.
182 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
183 versions ignore it before
184 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
185 - add some untested android support.
186 - enum expressions must be of type int (reported by Juan Pablo L).
31 187
324.11 Sat Feb 4 19:52:39 CET 2012 1884.11 Sat Feb 4 19:52:39 CET 2012
33 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as 189 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
34 was documented already, but not implemented in the repeating case. 190 was documented already, but not implemented in the repeating case.
35 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. 191 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
… …
219 reinitialising the default loop actually works (patch by 375 reinitialising the default loop actually works (patch by
220 Malek Hadj-Ali). 376 Malek Hadj-Ali).
221 - implement ev_suspend and ev_resume. 377 - implement ev_suspend and ev_resume.
222 - new EV_CUSTOM revents flag for use by applications. 378 - new EV_CUSTOM revents flag for use by applications.
223 - add documentation section about priorities. 379 - add documentation section about priorities.
224 - add a glossary to the dcoumentation. 380 - add a glossary to the documentation.
225 - extend the ev_fork description slightly. 381 - extend the ev_fork description slightly.
226 - optimize a jump out of call_pending. 382 - optimize a jump out of call_pending.
227 383
2283.53 Sun Feb 15 02:38:20 CET 2009 3843.53 Sun Feb 15 02:38:20 CET 2009
229 - fix a bug in event pipe creation on win32 that would cause a 385 - fix a bug in event pipe creation on win32 that would cause a

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