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Comparing libev/Changes (file contents):
Revision 1.286 by sf-exg, Fri Mar 1 11:12:34 2013 UTC vs.
Revision 1.357 by root, Wed Jan 22 01:50:42 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: faq, process a thing in each iteration 5TODO: document EV_TSTAMP_T
6TODO: dbeugging tips, ev_verify, ev_init twice 6TODO: for next ABI/API change, consider moving EV__IOFDSSET into io->fd instead and provide a getter.
7TODO: ev_break for immediate exit (EVBREAK_NOW?)
8TODO: ev_feed_child_event
9 7
10TODO: document the special problem of signals around fork. 8TODO: add ev_io_set_events, or ev_io_modify, or ev_io_change, or..., without IOFDSET
11TODO: store pid for each signal 9TODO: fix documentation of read-only] [read-write] and so on
12TODO: document file descriptor usage per loop 10TODO: maybe allow events = 0 for io watchers
13TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for differign pid, clean up in loop_fork 11 - the 4.31 timerfd code wrongly changes the priority of the signal
14TODO: embed watchers need updating when fd changes 12 fd watcher, which is usually harmless unless signal fds are
15TODO: document portbaility requirements for atomic pointer access 13 also used (found via cpan tester service).
14 - do not wake up every minute when timerfd is used to detect timejumps.
15 - support a lot more "uncommon" compile time configurations,
16 such as ev_embed enabled but ev_timer disabled.
17 - the linux aio backend is no longer compiled in by default.
18 - update to libecb version 0x00010008.
19
204.31 Fri Dec 20 21:58:29 CET 2019
21 - handle backends with minimum wait time a bit better by not
22 waiting in the presence of already-expired timers
23 (behaviour reported by Felipe Gasper).
24 - new feature: use timerfd to detect timejumps quickly,
25 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
26 - document EV_USE_SIGNALFD feature macro.
27
284.30 (EV only)
29 - change non-autoconf test for __kernel_rwf_t by testing
30 LINUX_VERSION_CODE, the most direct test I could find.
31 - fix a bug in the io_uring backend that polled the wrong
32 backend fd, causing it to not work in many cases.
33
344.29 (EV only)
35 - add io uring autoconf and non-autoconf detection.
36 - disable io_uring when some header files are too old.
37
384.28 (EV only)
39 - linuxaio backend resulted in random memory corruption
40 when loop is forked.
41 - linuxaio backend might have tried to cancel an iocb
42 multiple times (was unable to trigger this).
43 - linuxaio backend now employs a generation counter to
44 avoid handling spurious events from cancelled requests.
45 - io_cancel can return EINTR, deal with it. also, assume
46 io_submit also returns EINTR.
47 - fix some other minor bugs in linuxaio backend.
48 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
49 - cleanup: replace expect_true/false and noinline by their
50 libecb counterparts.
51 - move syscall infrastructure from ev_linuxaio.c to ev.c.
52 - prepare io_uring integration.
53 - tweak ev_floor.
54 - epoll, poll, win32 Sleep and other places that use millisecond
55 reslution now all try to round up times.
56 - solaris port backend didn't compile.
57 - abstract time constants into their macros, for more flexibility.
58
594.27 Thu Jun 27 22:43:44 CEST 2019
60 - linux aio backend almost completely rewritten to work around its
61 limitations.
62 - linux aio backend now requires linux 4.19+.
63 - epoll backend now mandatory for linux aio backend.
64 - fail assertions more aggressively on invalid fd's detected
65 in the event loop, do not just silently fd_kill in case of
66 user error.
67 - ev_io_start/ev_io_stop now verify the watcher fd using
68 a syscall when EV_VERIFY is 2 or higher.
69
704.26 (EV only)
71 - update to libecb 0x00010006.
72 - new experimental linux aio backend (linux 4.18+).
73 - removed redundant 0-ptr check in ev_once.
74 - updated/extended ev_set_allocator documentation.
75 - replaced EMPTY2 macro by array_needsize_noinit.
76 - minor code cleanups.
77 - epoll backend now uses epoll_create1 also after fork.
78
794.25 Fri Dec 21 07:49:20 CET 2018
80 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
81 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
82 - move the darwin select workaround higher in ev.c, as newer versions of
83 darwin managed to break their broken select even more.
84 - ANDROID => __ANDROID__ (reported by enh@google.com).
85 - disable epoll_create1 on android because it has broken header files
86 and google is unwilling to fix them (reported by enh@google.com).
87 - avoid a minor compilation warning on win32.
88 - c++: remove deprecated dynamic throw() specifications.
89 - c++: improve the (unsupported) bad_loop exception class.
90 - backport perl ev_periodic example to C, untested.
91 - update libecb, biggets change is to include a memory fence
92 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
93 - minor autoconf/automake modernisation.
94
954.24 Wed Dec 28 05:19:55 CET 2016
96 - bump version to 4.24, as the release tarball inexplicably
97 didn't have the right version in ev.h, even though the cvs-tagged
98 version did have the right one (reported by Ales Teska).
99
1004.23 Wed Nov 16 18:23:41 CET 2016
101 - move some declarations at the beginning to help certain retarded
102 microsoft compilers, even though their documentation claims
103 otherwise (reported by Ruslan Osmanov).
104
1054.22 Sun Dec 20 22:11:50 CET 2015
106 - when epoll detects unremovable fds in the fd set, rebuild
107 only the epoll descriptor, not the signal pipe, to avoid
108 SIGPIPE in ev_async_send. This doesn't solve it on fork,
109 so document what needs to be done in ev_loop_fork
110 (analyzed by Benjamin Mahler).
111 - remove superfluous sys/timeb.h include on win32
112 (analyzed by Jason Madden).
113 - updated libecb.
114
1154.20 Sat Jun 20 13:01:43 CEST 2015
116 - prefer noexcept over throw () with C++ 11.
117 - update ecb.h due to incompatibilities with c11.
118 - fix a potential aliasing issue when reading and writing
119 watcher callbacks.
120
1214.19 Thu Sep 25 08:18:25 CEST 2014
122 - ev.h wasn't valid C++ anymore, which tripped compilers other than
123 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
124 C++ doesn't support typedefs for function pointers fully, so the affected
125 declarations have to spell out the types each time.
126 - when not using autoconf, tighten the check for clock_gettime and related
127 functionality.
128
1294.18 Fri Sep 5 17:55:26 CEST 2014
130 - events on files were not always generated properly with the
131 epoll backend (testcase by Assaf Inbal).
132 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
133 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
134 - use a reasonable fallback for EV_NSIG instead of erroring out
135 when we can't detect the signal set size.
136 - in the absence of autoconf, do not use the clock syscall
137 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
138 doing clock_gettime in userspace).
139 - ensure extern "C" function pointers are used for externally-visible
140 loop callbacks (not watcher callbacks yet).
141 - (ecb) work around memory barriers and volatile apparently both being
142 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
143
1444.15 Fri Mar 1 12:04:50 CET 2013
16 - destroying a non-default loop would stop the global waitpid 145 - destroying a non-default loop would stop the global waitpid
17 watcher (Denis Bilenko). 146 watcher (Denis Bilenko).
18 - queueing pending watchers of higher priority from a watcher now invokes 147 - queueing pending watchers of higher priority from a watcher now invokes
19 them in a timely fashion (reported by Denis Bilenko). 148 them in a timely fashion (reported by Denis Bilenko).
20 - add throw() to all libev functions that cannot throw exceptions, for 149 - add throw() to all libev functions that cannot throw exceptions, for

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