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Comparing libev/Changes (file contents):
Revision 1.250 by root, Sat Feb 4 18:55:50 2012 UTC vs.
Revision 1.352 by root, Tue Dec 24 13:27:28 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
6 - the new timerfd code wrongly changed the priority of ther signal
7 fd watcher, which is usuallys harmless unless signal fds are
8 also used (found via cpan tester service).
9
104.31 Fri Dec 20 21:58:29 CET 2019
11 - handle backends with minimum wait time a bit better by not
12 waiting in the presence of already-expired timers
13 (behaviour reported by Felipe Gasper).
14 - new feature: use timerfd to detect timejumps quickly,
15 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
16 - document EV_USE_SIGNALFD feature macro.
17
184.30 (EV only)
19 - change non-autoconf test for __kernel_rwf_t by testing
20 LINUX_VERSION_CODE, the most direct test I could find.
21 - fix a bug in the io_uring backend that polled the wrong
22 backend fd, causing it to not work in many cases.
23
244.29 (EV only)
25 - add io uring autoconf and non-autoconf detection.
26 - disable io_uring when some header files are too old.
27
284.28 (EV only)
29 - linuxaio backend resulted in random memory corruption
30 when loop is forked.
31 - linuxaio backend might have tried to cancel an iocb
32 multiple times (was unable to trigger this).
33 - linuxaio backend now employs a generation counter to
34 avoid handling spurious events from cancelled requests.
35 - io_cancel can return EINTR, deal with it. also, assume
36 io_submit also returns EINTR.
37 - fix some other minor bugs in linuxaio backend.
38 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
39 - cleanup: replace expect_true/false and noinline by their
40 libecb counterparts.
41 - move syscall infrastructure from ev_linuxaio.c to ev.c.
42 - prepare io_uring integration.
43 - tweak ev_floor.
44 - epoll, poll, win32 Sleep and other places that use millisecond
45 reslution now all try to round up times.
46 - solaris port backend didn't compile.
47 - abstract time constants into their macros, for more flexibility.
48
494.27 Thu Jun 27 22:43:44 CEST 2019
50 - linux aio backend almost completely rewritten to work around its
51 limitations.
52 - linux aio backend now requires linux 4.19+.
53 - epoll backend now mandatory for linux aio backend.
54 - fail assertions more aggressively on invalid fd's detected
55 in the event loop, do not just silently fd_kill in case of
56 user error.
57 - ev_io_start/ev_io_stop now verify the watcher fd using
58 a syscall when EV_VERIFY is 2 or higher.
59
604.26 (EV only)
61 - update to libecb 0x00010006.
62 - new experimental linux aio backend (linux 4.18+).
63 - removed redundant 0-ptr check in ev_once.
64 - updated/extended ev_set_allocator documentation.
65 - replaced EMPTY2 macro by array_needsize_noinit.
66 - minor code cleanups.
67 - epoll backend now uses epoll_create1 also after fork.
68
694.25 Fri Dec 21 07:49:20 CET 2018
70 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
71 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
72 - move the darwin select workaround higher in ev.c, as newer versions of
73 darwin managed to break their broken select even more.
74 - ANDROID => __ANDROID__ (reported by enh@google.com).
75 - disable epoll_create1 on android because it has broken header files
76 and google is unwilling to fix them (reported by enh@google.com).
77 - avoid a minor compilation warning on win32.
78 - c++: remove deprecated dynamic throw() specifications.
79 - c++: improve the (unsupported) bad_loop exception class.
80 - backport perl ev_periodic example to C, untested.
81 - update libecb, biggets change is to include a memory fence
82 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
83 - minor autoconf/automake modernisation.
84
854.24 Wed Dec 28 05:19:55 CET 2016
86 - bump version to 4.24, as the release tarball inexplicably
87 didn't have the right version in ev.h, even though the cvs-tagged
88 version did have the right one (reported by Ales Teska).
89
904.23 Wed Nov 16 18:23:41 CET 2016
91 - move some declarations at the beginning to help certain retarded
92 microsoft compilers, even though their documentation claims
93 otherwise (reported by Ruslan Osmanov).
94
954.22 Sun Dec 20 22:11:50 CET 2015
96 - when epoll detects unremovable fds in the fd set, rebuild
97 only the epoll descriptor, not the signal pipe, to avoid
98 SIGPIPE in ev_async_send. This doesn't solve it on fork,
99 so document what needs to be done in ev_loop_fork
100 (analyzed by Benjamin Mahler).
101 - remove superfluous sys/timeb.h include on win32
102 (analyzed by Jason Madden).
103 - updated libecb.
104
1054.20 Sat Jun 20 13:01:43 CEST 2015
106 - prefer noexcept over throw () with C++ 11.
107 - update ecb.h due to incompatibilities with c11.
108 - fix a potential aliasing issue when reading and writing
109 watcher callbacks.
110
1114.19 Thu Sep 25 08:18:25 CEST 2014
112 - ev.h wasn't valid C++ anymore, which tripped compilers other than
113 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
114 C++ doesn't support typedefs for function pointers fully, so the affected
115 declarations have to spell out the types each time.
116 - when not using autoconf, tighten the check for clock_gettime and related
117 functionality.
118
1194.18 Fri Sep 5 17:55:26 CEST 2014
120 - events on files were not always generated properly with the
121 epoll backend (testcase by Assaf Inbal).
122 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
123 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
124 - use a reasonable fallback for EV_NSIG instead of erroring out
125 when we can't detect the signal set size.
126 - in the absence of autoconf, do not use the clock syscall
127 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
128 doing clock_gettime in userspace).
129 - ensure extern "C" function pointers are used for externally-visible
130 loop callbacks (not watcher callbacks yet).
131 - (ecb) work around memory barriers and volatile apparently both being
132 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
133
1344.15 Fri Mar 1 12:04:50 CET 2013
135 - destroying a non-default loop would stop the global waitpid
136 watcher (Denis Bilenko).
137 - queueing pending watchers of higher priority from a watcher now invokes
138 them in a timely fashion (reported by Denis Bilenko).
139 - add throw() to all libev functions that cannot throw exceptions, for
140 further code size decrease when compiling for C++.
141 - add throw () to callbacks that must not throw exceptions (allocator,
142 syserr, loop acquire/release, periodic reschedule cbs).
143 - fix event_base_loop return code, add event_get_callback, event_base_new,
144 event_base_get_method calls to improve libevent 1.x emulation and add
145 some libevent 2.x functionality (based on a patch by Jeff Davey).
146 - add more memory fences to fix a bug reported by Jeff Davey. Better
147 be overfenced than underprotected.
148 - ev_run now returns a boolean status (true meaning watchers are
149 still active).
150 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
151 libev's EV_ERROR (reported by 191919).
152 - (ecb) add memory fence support for xlC (Darin McBride).
153 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
154 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
155 - work around some kernels losing file descriptors by leaking
156 the kqueue descriptor in the child.
157 - work around linux inotify not reporting IN_ATTRIB changes for directories
158 in many cases.
159 - include sys/syscall.h instead of plain syscall.h.
160 - check for io watcher loops in ev_verify, check for the most
161 common reported usage bug in ev_io_start.
162 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
163 - always use WSASend/WSARecv directly on windows, hoping that this
164 works in all cases (unlike read/write/send/recv...).
165 - try to detect signals around a fork faster (test program by
166 Denis Bilenko).
167 - work around recent glibc versions that leak memory in realloc.
168 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
169 the watcher base set (loop) method.
170 - rewrite the async/signal pipe logic to always keep a valid fd, which
171 simplifies (and hopefully correctifies :) the race checking
172 on fork, at the cost of one extra fd.
173 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
174 inotify-supporting filesystems.
175 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
176 versions ignore it before
177 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
178 - add some untested android support.
179 - enum expressions must be of type int (reported by Juan Pablo L).
5 180
64.11 Sat Feb 4 19:52:39 CET 2012 1814.11 Sat Feb 4 19:52:39 CET 2012
7 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as 182 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
8 was documented already, but not implemented in the repeating case. 183 was documented already, but not implemented in the repeating case.
9 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. 184 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
… …
27 - fix #3 "be smart about timeouts" to not "deadlock" when 202 - fix #3 "be smart about timeouts" to not "deadlock" when
28 timeout == now, also improve the section overall. 203 timeout == now, also improve the section overall.
29 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom. 204 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
30 - support new EV_API_STATIC mode to make all libev symbols 205 - support new EV_API_STATIC mode to make all libev symbols
31 static. 206 static.
207 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
208 were empty.
32 209
334.04 Wed Feb 16 09:01:51 CET 2011 2104.04 Wed Feb 16 09:01:51 CET 2011
34 - fix two problems in the native win32 backend, where reuse of fd's 211 - fix two problems in the native win32 backend, where reuse of fd's
35 with different underlying handles caused handles not to be removed 212 with different underlying handles caused handles not to be removed
36 or added to the select set (analyzed and tested by Bert Belder). 213 or added to the select set (analyzed and tested by Bert Belder).
… …
191 reinitialising the default loop actually works (patch by 368 reinitialising the default loop actually works (patch by
192 Malek Hadj-Ali). 369 Malek Hadj-Ali).
193 - implement ev_suspend and ev_resume. 370 - implement ev_suspend and ev_resume.
194 - new EV_CUSTOM revents flag for use by applications. 371 - new EV_CUSTOM revents flag for use by applications.
195 - add documentation section about priorities. 372 - add documentation section about priorities.
196 - add a glossary to the dcoumentation. 373 - add a glossary to the documentation.
197 - extend the ev_fork description slightly. 374 - extend the ev_fork description slightly.
198 - optimize a jump out of call_pending. 375 - optimize a jump out of call_pending.
199 376
2003.53 Sun Feb 15 02:38:20 CET 2009 3773.53 Sun Feb 15 02:38:20 CET 2009
201 - fix a bug in event pipe creation on win32 that would cause a 378 - fix a bug in event pipe creation on win32 that would cause a

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