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Comparing libev/Changes (file contents):
Revision 1.273 by root, Tue May 29 19:10:39 2012 UTC vs.
Revision 1.367 by root, Wed Mar 18 12:30:20 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: 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
5TODO: faq, process a thing in each iteration
6TODO: dbeugging tips, ev_verify, ev_init twice
7 5
8TODO: ev_feed_child_event 64.33 Wed Mar 18 13:22:29 CET 2020
7 - no changes w.r.t. 4.32.
8
94.32 (EV only)
10 - the 4.31 timerfd code wrongly changed the priority of the signal
11 fd watcher, which is usually harmless unless signal fds are
12 also used (found via cpan tester service).
13 - the documentation wrongly claimed that user may modify fd and events
14 members in io watchers when the watcher was stopped
15 (found by b_jonas).
16 - new ev_io_modify mutator which changes only the events member,
17 which can be faster. also added ev::io::set (int events) method
18 to ev++.h.
19 - officially allow a zero events mask for io watchers. this should
20 work with older libev versions as well but was not officially
21 allowed before.
22 - do not wake up every minute when timerfd is used to detect timejumps.
23 - do not wake up every minute when periodics are disabled and we have
24 a monotonic clock.
25 - support a lot more "uncommon" compile time configurations,
26 such as ev_embed enabled but ev_timer disabled.
27 - use a start/stop wrapper class to reduce code duplication in
28 ev++.h and make it needlessly more c++-y.
29 - the linux aio backend is no longer compiled in by default.
30 - update to libecb version 0x00010008.
31
324.31 Fri Dec 20 21:58:29 CET 2019
33 - handle backends with minimum wait time a bit better by not
34 waiting in the presence of already-expired timers
35 (behaviour reported by Felipe Gasper).
36 - new feature: use timerfd to detect timejumps quickly,
37 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
38 - document EV_USE_SIGNALFD feature macro.
39
404.30 (EV only)
41 - change non-autoconf test for __kernel_rwf_t by testing
42 LINUX_VERSION_CODE, the most direct test I could find.
43 - fix a bug in the io_uring backend that polled the wrong
44 backend fd, causing it to not work in many cases.
45
464.29 (EV only)
47 - add io uring autoconf and non-autoconf detection.
48 - disable io_uring when some header files are too old.
49
504.28 (EV only)
51 - linuxaio backend resulted in random memory corruption
52 when loop is forked.
53 - linuxaio backend might have tried to cancel an iocb
54 multiple times (was unable to trigger this).
55 - linuxaio backend now employs a generation counter to
56 avoid handling spurious events from cancelled requests.
57 - io_cancel can return EINTR, deal with it. also, assume
58 io_submit also returns EINTR.
59 - fix some other minor bugs in linuxaio backend.
60 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
61 - cleanup: replace expect_true/false and noinline by their
62 libecb counterparts.
63 - move syscall infrastructure from ev_linuxaio.c to ev.c.
64 - prepare io_uring integration.
65 - tweak ev_floor.
66 - epoll, poll, win32 Sleep and other places that use millisecond
67 reslution now all try to round up times.
68 - solaris port backend didn't compile.
69 - abstract time constants into their macros, for more flexibility.
70
714.27 Thu Jun 27 22:43:44 CEST 2019
72 - linux aio backend almost completely rewritten to work around its
73 limitations.
74 - linux aio backend now requires linux 4.19+.
75 - epoll backend now mandatory for linux aio backend.
76 - fail assertions more aggressively on invalid fd's detected
77 in the event loop, do not just silently fd_kill in case of
78 user error.
79 - ev_io_start/ev_io_stop now verify the watcher fd using
80 a syscall when EV_VERIFY is 2 or higher.
81
824.26 (EV only)
83 - update to libecb 0x00010006.
84 - new experimental linux aio backend (linux 4.18+).
85 - removed redundant 0-ptr check in ev_once.
86 - updated/extended ev_set_allocator documentation.
87 - replaced EMPTY2 macro by array_needsize_noinit.
88 - minor code cleanups.
89 - epoll backend now uses epoll_create1 also after fork.
90
914.25 Fri Dec 21 07:49:20 CET 2018
92 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
93 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
94 - move the darwin select workaround higher in ev.c, as newer versions of
95 darwin managed to break their broken select even more.
96 - ANDROID => __ANDROID__ (reported by enh@google.com).
97 - disable epoll_create1 on android because it has broken header files
98 and google is unwilling to fix them (reported by enh@google.com).
99 - avoid a minor compilation warning on win32.
100 - c++: remove deprecated dynamic throw() specifications.
101 - c++: improve the (unsupported) bad_loop exception class.
102 - backport perl ev_periodic example to C, untested.
103 - update libecb, biggets change is to include a memory fence
104 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
105 - minor autoconf/automake modernisation.
106
1074.24 Wed Dec 28 05:19:55 CET 2016
108 - bump version to 4.24, as the release tarball inexplicably
109 didn't have the right version in ev.h, even though the cvs-tagged
110 version did have the right one (reported by Ales Teska).
111
1124.23 Wed Nov 16 18:23:41 CET 2016
113 - move some declarations at the beginning to help certain retarded
114 microsoft compilers, even though their documentation claims
115 otherwise (reported by Ruslan Osmanov).
116
1174.22 Sun Dec 20 22:11:50 CET 2015
118 - when epoll detects unremovable fds in the fd set, rebuild
119 only the epoll descriptor, not the signal pipe, to avoid
120 SIGPIPE in ev_async_send. This doesn't solve it on fork,
121 so document what needs to be done in ev_loop_fork
122 (analyzed by Benjamin Mahler).
123 - remove superfluous sys/timeb.h include on win32
124 (analyzed by Jason Madden).
125 - updated libecb.
126
1274.20 Sat Jun 20 13:01:43 CEST 2015
128 - prefer noexcept over throw () with C++ 11.
129 - update ecb.h due to incompatibilities with c11.
130 - fix a potential aliasing issue when reading and writing
131 watcher callbacks.
132
1334.19 Thu Sep 25 08:18:25 CEST 2014
134 - ev.h wasn't valid C++ anymore, which tripped compilers other than
135 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
136 C++ doesn't support typedefs for function pointers fully, so the affected
137 declarations have to spell out the types each time.
138 - when not using autoconf, tighten the check for clock_gettime and related
139 functionality.
140
1414.18 Fri Sep 5 17:55:26 CEST 2014
142 - events on files were not always generated properly with the
143 epoll backend (testcase by Assaf Inbal).
144 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
145 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
146 - use a reasonable fallback for EV_NSIG instead of erroring out
147 when we can't detect the signal set size.
148 - in the absence of autoconf, do not use the clock syscall
149 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
150 doing clock_gettime in userspace).
151 - ensure extern "C" function pointers are used for externally-visible
152 loop callbacks (not watcher callbacks yet).
153 - (ecb) work around memory barriers and volatile apparently both being
154 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
155
1564.15 Fri Mar 1 12:04:50 CET 2013
9 - destroying a non-default loop would stop the global waitpid 157 - destroying a non-default loop would stop the global waitpid
10 watcher (Denis Bilenko). 158 watcher (Denis Bilenko).
11 - queueing pending watchers of higher priority from a watcher now invokes 159 - queueing pending watchers of higher priority from a watcher now invokes
12 them in a timely fashion (reported by Denis Bilenko). 160 them in a timely fashion (reported by Denis Bilenko).
13 - add throw() to all libev functions that cannot throw exceptions, for 161 - add throw() to all libev functions that cannot throw exceptions, for
… …
26 - (ecb) add memory fence support for xlC (Darin McBride). 174 - (ecb) add memory fence support for xlC (Darin McBride).
27 - (ecb) add memory fence support for gcc-mips (Anton Kirilov). 175 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
28 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber). 176 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
29 - work around some kernels losing file descriptors by leaking 177 - work around some kernels losing file descriptors by leaking
30 the kqueue descriptor in the child. 178 the kqueue descriptor in the child.
179 - work around linux inotify not reporting IN_ATTRIB changes for directories
180 in many cases.
31 - include sys/syscall.h instead of plain syscall.h. 181 - include sys/syscall.h instead of plain syscall.h.
32 - check for io watcher loops in ev_verify, check for the most 182 - check for io watcher loops in ev_verify, check for the most
33 common reported usage bug in ev_io_start. 183 common reported usage bug in ev_io_start.
34 - chose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET. 184 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
35 - always use WSASend/WSARecv directly on windows, hoping that this 185 - always use WSASend/WSARecv directly on windows, hoping that this
36 works in all cases (unlike read/write/send/recv...). 186 works in all cases (unlike read/write/send/recv...).
187 - try to detect signals around a fork faster (test program by
188 Denis Bilenko).
189 - work around recent glibc versions that leak memory in realloc.
190 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
191 the watcher base set (loop) method.
192 - rewrite the async/signal pipe logic to always keep a valid fd, which
193 simplifies (and hopefully correctifies :) the race checking
194 on fork, at the cost of one extra fd.
195 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
196 inotify-supporting filesystems.
197 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
198 versions ignore it before
199 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
200 - add some untested android support.
201 - enum expressions must be of type int (reported by Juan Pablo L).
37 202
384.11 Sat Feb 4 19:52:39 CET 2012 2034.11 Sat Feb 4 19:52:39 CET 2012
39 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as 204 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
40 was documented already, but not implemented in the repeating case. 205 was documented already, but not implemented in the repeating case.
41 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS. 206 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
… …
225 reinitialising the default loop actually works (patch by 390 reinitialising the default loop actually works (patch by
226 Malek Hadj-Ali). 391 Malek Hadj-Ali).
227 - implement ev_suspend and ev_resume. 392 - implement ev_suspend and ev_resume.
228 - new EV_CUSTOM revents flag for use by applications. 393 - new EV_CUSTOM revents flag for use by applications.
229 - add documentation section about priorities. 394 - add documentation section about priorities.
230 - add a glossary to the dcoumentation. 395 - add a glossary to the documentation.
231 - extend the ev_fork description slightly. 396 - extend the ev_fork description slightly.
232 - optimize a jump out of call_pending. 397 - optimize a jump out of call_pending.
233 398
2343.53 Sun Feb 15 02:38:20 CET 2009 3993.53 Sun Feb 15 02:38:20 CET 2009
235 - fix a bug in event pipe creation on win32 that would cause a 400 - fix a bug in event pipe creation on win32 that would cause a

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