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Comparing libev/Changes (file contents):
Revision 1.285 by root, Thu Feb 28 02:17:20 2013 UTC vs.
Revision 1.354 by root, Fri Dec 27 16:08:24 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: ^ 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
7TODO: ev_break for immediate exit (EVBREAK_NOW?)
8TODO: ev_feed_child_event
9 6
10TODO: document the special problem of signals around fork. 7 - the 4.31 timerfd code wrongly changes the priority of the signal
11TODO: store pid for each signal 8 fd watcher, which is usually harmless unless signal fds are
12TODO: document file descriptor usage per loop 9 also used (found via cpan tester service).
13TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for differign pid, clean up in loop_fork 10 - support a lot more "uncommon" compile time configurations,
14TODO: embed watchers need updating when fd changes 11 such as ev_embed enabled but ev_timer disabled.
15TODO: document portbaility requirements for atomic pointer access 12
134.31 Fri Dec 20 21:58:29 CET 2019
14 - handle backends with minimum wait time a bit better by not
15 waiting in the presence of already-expired timers
16 (behaviour reported by Felipe Gasper).
17 - new feature: use timerfd to detect timejumps quickly,
18 can be disabled with the new EVFLAG_NOTIMERFD loop flag.
19 - document EV_USE_SIGNALFD feature macro.
20
214.30 (EV only)
22 - change non-autoconf test for __kernel_rwf_t by testing
23 LINUX_VERSION_CODE, the most direct test I could find.
24 - fix a bug in the io_uring backend that polled the wrong
25 backend fd, causing it to not work in many cases.
26
274.29 (EV only)
28 - add io uring autoconf and non-autoconf detection.
29 - disable io_uring when some header files are too old.
30
314.28 (EV only)
32 - linuxaio backend resulted in random memory corruption
33 when loop is forked.
34 - linuxaio backend might have tried to cancel an iocb
35 multiple times (was unable to trigger this).
36 - linuxaio backend now employs a generation counter to
37 avoid handling spurious events from cancelled requests.
38 - io_cancel can return EINTR, deal with it. also, assume
39 io_submit also returns EINTR.
40 - fix some other minor bugs in linuxaio backend.
41 - ev_tstamp type can now be overriden by defining EV_TSTAMP_T.
42 - cleanup: replace expect_true/false and noinline by their
43 libecb counterparts.
44 - move syscall infrastructure from ev_linuxaio.c to ev.c.
45 - prepare io_uring integration.
46 - tweak ev_floor.
47 - epoll, poll, win32 Sleep and other places that use millisecond
48 reslution now all try to round up times.
49 - solaris port backend didn't compile.
50 - abstract time constants into their macros, for more flexibility.
51
524.27 Thu Jun 27 22:43:44 CEST 2019
53 - linux aio backend almost completely rewritten to work around its
54 limitations.
55 - linux aio backend now requires linux 4.19+.
56 - epoll backend now mandatory for linux aio backend.
57 - fail assertions more aggressively on invalid fd's detected
58 in the event loop, do not just silently fd_kill in case of
59 user error.
60 - ev_io_start/ev_io_stop now verify the watcher fd using
61 a syscall when EV_VERIFY is 2 or higher.
62
634.26 (EV only)
64 - update to libecb 0x00010006.
65 - new experimental linux aio backend (linux 4.18+).
66 - removed redundant 0-ptr check in ev_once.
67 - updated/extended ev_set_allocator documentation.
68 - replaced EMPTY2 macro by array_needsize_noinit.
69 - minor code cleanups.
70 - epoll backend now uses epoll_create1 also after fork.
71
724.25 Fri Dec 21 07:49:20 CET 2018
73 - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
74 (EV_THROW still provided) and now uses noexcept on C++11 or newer.
75 - move the darwin select workaround higher in ev.c, as newer versions of
76 darwin managed to break their broken select even more.
77 - ANDROID => __ANDROID__ (reported by enh@google.com).
78 - disable epoll_create1 on android because it has broken header files
79 and google is unwilling to fix them (reported by enh@google.com).
80 - avoid a minor compilation warning on win32.
81 - c++: remove deprecated dynamic throw() specifications.
82 - c++: improve the (unsupported) bad_loop exception class.
83 - backport perl ev_periodic example to C, untested.
84 - update libecb, biggets change is to include a memory fence
85 in ECB_MEMORY_FENCE_RELEASE on x86/amd64.
86 - minor autoconf/automake modernisation.
87
884.24 Wed Dec 28 05:19:55 CET 2016
89 - bump version to 4.24, as the release tarball inexplicably
90 didn't have the right version in ev.h, even though the cvs-tagged
91 version did have the right one (reported by Ales Teska).
92
934.23 Wed Nov 16 18:23:41 CET 2016
94 - move some declarations at the beginning to help certain retarded
95 microsoft compilers, even though their documentation claims
96 otherwise (reported by Ruslan Osmanov).
97
984.22 Sun Dec 20 22:11:50 CET 2015
99 - when epoll detects unremovable fds in the fd set, rebuild
100 only the epoll descriptor, not the signal pipe, to avoid
101 SIGPIPE in ev_async_send. This doesn't solve it on fork,
102 so document what needs to be done in ev_loop_fork
103 (analyzed by Benjamin Mahler).
104 - remove superfluous sys/timeb.h include on win32
105 (analyzed by Jason Madden).
106 - updated libecb.
107
1084.20 Sat Jun 20 13:01:43 CEST 2015
109 - prefer noexcept over throw () with C++ 11.
110 - update ecb.h due to incompatibilities with c11.
111 - fix a potential aliasing issue when reading and writing
112 watcher callbacks.
113
1144.19 Thu Sep 25 08:18:25 CEST 2014
115 - ev.h wasn't valid C++ anymore, which tripped compilers other than
116 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
117 C++ doesn't support typedefs for function pointers fully, so the affected
118 declarations have to spell out the types each time.
119 - when not using autoconf, tighten the check for clock_gettime and related
120 functionality.
121
1224.18 Fri Sep 5 17:55:26 CEST 2014
123 - events on files were not always generated properly with the
124 epoll backend (testcase by Assaf Inbal).
125 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
126 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
127 - use a reasonable fallback for EV_NSIG instead of erroring out
128 when we can't detect the signal set size.
129 - in the absence of autoconf, do not use the clock syscall
130 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
131 doing clock_gettime in userspace).
132 - ensure extern "C" function pointers are used for externally-visible
133 loop callbacks (not watcher callbacks yet).
134 - (ecb) work around memory barriers and volatile apparently both being
135 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
136
1374.15 Fri Mar 1 12:04:50 CET 2013
16 - destroying a non-default loop would stop the global waitpid 138 - destroying a non-default loop would stop the global waitpid
17 watcher (Denis Bilenko). 139 watcher (Denis Bilenko).
18 - queueing pending watchers of higher priority from a watcher now invokes 140 - queueing pending watchers of higher priority from a watcher now invokes
19 them in a timely fashion (reported by Denis Bilenko). 141 them in a timely fashion (reported by Denis Bilenko).
20 - add throw() to all libev functions that cannot throw exceptions, for 142 - add throw() to all libev functions that cannot throw exceptions, for
… …
38 - work around linux inotify not reporting IN_ATTRIB changes for directories 160 - work around linux inotify not reporting IN_ATTRIB changes for directories
39 in many cases. 161 in many cases.
40 - include sys/syscall.h instead of plain syscall.h. 162 - include sys/syscall.h instead of plain syscall.h.
41 - check for io watcher loops in ev_verify, check for the most 163 - check for io watcher loops in ev_verify, check for the most
42 common reported usage bug in ev_io_start. 164 common reported usage bug in ev_io_start.
43 - chose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET. 165 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
44 - always use WSASend/WSARecv directly on windows, hoping that this 166 - always use WSASend/WSARecv directly on windows, hoping that this
45 works in all cases (unlike read/write/send/recv...). 167 works in all cases (unlike read/write/send/recv...).
46 - try to detect signals around a fork faster (test program by 168 - try to detect signals around a fork faster (test program by
47 Denis Bilenko). 169 Denis Bilenko).
48 - work around recent glibc versions that leak memory in realloc. 170 - work around recent glibc versions that leak memory in realloc.
49 - rename ev::embed::set to ev::embed::set_embed to avoid clashing 171 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
50 the watcher base set (loop) method. 172 the watcher base set (loop) method.
51 - rewrite the async/signal pipe logic to always keep a valid fd, which 173 - rewrite the async/signal pipe logic to always keep a valid fd, which
52 simplifies (and hopefuly correctifies :) the race checking 174 simplifies (and hopefully correctifies :) the race checking
53 on fork, at the cost of one extra fd. 175 on fork, at the cost of one extra fd.
54 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of 176 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
55 inotify-supporting filesystems. 177 inotify-supporting filesystems.
56 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf 178 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
57 versions ignore it before 179 versions ignore it before
… …
249 reinitialising the default loop actually works (patch by 371 reinitialising the default loop actually works (patch by
250 Malek Hadj-Ali). 372 Malek Hadj-Ali).
251 - implement ev_suspend and ev_resume. 373 - implement ev_suspend and ev_resume.
252 - new EV_CUSTOM revents flag for use by applications. 374 - new EV_CUSTOM revents flag for use by applications.
253 - add documentation section about priorities. 375 - add documentation section about priorities.
254 - add a glossary to the dcoumentation. 376 - add a glossary to the documentation.
255 - extend the ev_fork description slightly. 377 - extend the ev_fork description slightly.
256 - optimize a jump out of call_pending. 378 - optimize a jump out of call_pending.
257 379
2583.53 Sun Feb 15 02:38:20 CET 2009 3803.53 Sun Feb 15 02:38:20 CET 2009
259 - fix a bug in event pipe creation on win32 that would cause a 381 - fix a bug in event pipe creation on win32 that would cause a

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