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Comparing libev/Changes (file contents):
Revision 1.216 by root, Mon Jan 10 14:30:15 2011 UTC vs.
Revision 1.299 by root, Tue Sep 9 21:51:35 2014 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: move some other examples to common idioms? combining watchers, 3TODO: ev_loop_wakeup
4thread usage, coroutine switch? 4TODO: EV_STANDALONE == NO_HASSEL (do not use clock_gettime in ev_standalone)
5TODO: faq, process a thing in each iteration
6TODO: dbeugging tips, ev_verify, ev_init twice
7TODO: ev_break for immediate exit (EVBREAK_NOW?)
8TODO: ev_feed_child_event
9TODO: document the special problem of signals around fork.
10TODO: store pid for each signal
11TODO: document file descriptor usage per loop
12TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for differign pid, clean up in loop_fork
13TODO: embed watchers need updating when fd changes
14TODO: document portability requirements for atomic pointer access
15TODO: possible cb aliasing?
16TODO: document requirements for function pointers and calling conventions.
5 17
6TODO: frankenpoll 18 - ev.h wasn't valid C++ anymore, which tripped compilers other than
7TODO: allow files and so on 19 clang, msvc or gcc (analyzed by Raphael 'kena' Poss). Unfortunately,
84.03 20 C++ doesn't support typedefs for function pointers fully, so the affected
21 declarations have to spell out the types each time.
22 - when not using autoconf, tighten the check for clock_gettime and related
23 functionality.
24
254.18 Fri Sep 5 17:55:26 CEST 2014
26 - events on files were not always generated properly with the
27 epoll backend (testcase by Assaf Inbal).
28 - mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
29 - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
30 - use a reasonable fallback for EV_NSIG instead of erroring out
31 when we can't detect the signal set size.
32 - in the absence of autoconf, do not use the clock syscall
33 on glibc >= 2.17 (avoids the syscall AND -lrt on systems
34 doing clock_gettime in userspace).
35 - ensure extern "C" function pointers are used for externally-visible
36 loop callbacks (not watcher callbacks yet).
37 - (ecb) work around memory barriers and volatile apparently both being
38 broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
39
404.15 Fri Mar 1 12:04:50 CET 2013
41 - destroying a non-default loop would stop the global waitpid
42 watcher (Denis Bilenko).
43 - queueing pending watchers of higher priority from a watcher now invokes
44 them in a timely fashion (reported by Denis Bilenko).
45 - add throw() to all libev functions that cannot throw exceptions, for
46 further code size decrease when compiling for C++.
47 - add throw () to callbacks that must not throw exceptions (allocator,
48 syserr, loop acquire/release, periodic reschedule cbs).
49 - fix event_base_loop return code, add event_get_callback, event_base_new,
50 event_base_get_method calls to improve libevent 1.x emulation and add
51 some libevent 2.x functionality (based on a patch by Jeff Davey).
52 - add more memory fences to fix a bug reported by Jeff Davey. Better
53 be overfenced than underprotected.
54 - ev_run now returns a boolean status (true meaning watchers are
55 still active).
56 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
57 libev's EV_ERROR (reported by 191919).
58 - (ecb) add memory fence support for xlC (Darin McBride).
59 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
60 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
61 - work around some kernels losing file descriptors by leaking
62 the kqueue descriptor in the child.
63 - work around linux inotify not reporting IN_ATTRIB changes for directories
64 in many cases.
65 - include sys/syscall.h instead of plain syscall.h.
66 - check for io watcher loops in ev_verify, check for the most
67 common reported usage bug in ev_io_start.
68 - choose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
69 - always use WSASend/WSARecv directly on windows, hoping that this
70 works in all cases (unlike read/write/send/recv...).
71 - try to detect signals around a fork faster (test program by
72 Denis Bilenko).
73 - work around recent glibc versions that leak memory in realloc.
74 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
75 the watcher base set (loop) method.
76 - rewrite the async/signal pipe logic to always keep a valid fd, which
77 simplifies (and hopefully correctifies :) the race checking
78 on fork, at the cost of one extra fd.
79 - add fat, msdos, jffs2, ramfs, ntfs and btrfs to the list of
80 inotify-supporting filesystems.
81 - move orig_CFLAGS assignment to after AC_INIT, as newer autoconf
82 versions ignore it before
83 (https://bugzilla.redhat.com/show_bug.cgi?id=908096).
84 - add some untested android support.
85 - enum expressions must be of type int (reported by Juan Pablo L).
86
874.11 Sat Feb 4 19:52:39 CET 2012
88 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
89 was documented already, but not implemented in the repeating case.
90 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
91 - fix a race where the workaround against the epoll fork bugs
92 caused signals to not be handled anymore.
93 - correct backend_fudge for most backends, and implement a windows
94 specific workaround to avoid looping because we call both
95 select and Sleep, both with different time resolutions.
96 - document range and guarantees of ev_sleep.
97 - document reasonable ranges for periodics interval and offset.
98 - rename backend_fudge to backend_mintime to avoid future confusion :)
99 - change the default periodic reschedule function to hopefully be more
100 exact and correct even in corner cases or in the far future.
101 - do not rely on -lm anymore: use it when available but use our
102 own floor () if it is missing. This should make it easier to embed,
103 as no external libraries are required.
104 - strategically import macros from libecb and mark rarely-used functions
105 as cache-cold (saving almost 2k code size on typical amd64 setups).
106 - add Symbols.ev and Symbols.event files, that were missing.
107 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
108 - fix #3 "be smart about timeouts" to not "deadlock" when
109 timeout == now, also improve the section overall.
110 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
111 - support new EV_API_STATIC mode to make all libev symbols
112 static.
113 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
114 were empty.
115
1164.04 Wed Feb 16 09:01:51 CET 2011
117 - fix two problems in the native win32 backend, where reuse of fd's
118 with different underlying handles caused handles not to be removed
119 or added to the select set (analyzed and tested by Bert Belder).
120 - do no rely on ceil() in ev_e?poll.c.
121 - backport libev to HP-UX versions before 11 v3.
122 - configure did not detect nanosleep and clock_gettime properly when
123 they are available in the libc (as opposed to -lrt).
124
1254.03 Tue Jan 11 14:37:25 CET 2011
126 - officially support polling files with all backends.
9 - support files, /dev/zero etc. the same way as select in the epoll 127 - support files, /dev/zero etc. the same way as select in the epoll
10 backend, by generating events on our own. 128 backend, by generating events on our own.
129 - ports backend: work around solaris bug 6874410 and many related ones
130 (EINTR, maybe more), with no performance loss (note that the solaris
131 bug report is actually wrong, reality is far more bizarre and broken
132 than that).
11 - define EV_READ/EV_WRITE as macros in event.h, as some programs use 133 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
12 #ifdef to test for them. 134 #ifdef to test for them.
13 - new (experimental) function: ev_feed_signal. 135 - new (experimental) function: ev_feed_signal.
14 - new (to become default) EVFLAG_NOSIGMASK flag. 136 - new (to become default) EVFLAG_NOSIGMASK flag.
15 - new EVBACKEND_MASK symbol. 137 - new EVBACKEND_MASK symbol.
16 - ports backend: work around solaris bug 6874410 and many related ones 138 - updated COMMON IDIOMS SECTION.
17 (EINTR, maybe more), with no performance loss (note that the solaris
18 bug report is actually wrong, reality is far more bizarre and broken
19 than that).
20 139
214.01 Fri Nov 5 21:51:29 CET 2010 1404.01 Fri Nov 5 21:51:29 CET 2010
22 - automake fucked it up, apparently, --add-missing -f is not quite enough 141 - automake fucked it up, apparently, --add-missing -f is not quite enough
23 to make it update its files, so 4.00 didn't install ev++.h and 142 to make it update its files, so 4.00 didn't install ev++.h and
24 event.h on make install. grrr. 143 event.h on make install. grrr.
… …
86 catch race conditions, but the users have spoken. 205 catch race conditions, but the users have spoken.
87 - point out the unspecified signal mask in the documentation, and 206 - point out the unspecified signal mask in the documentation, and
88 that this is a race condition regardless of EV_SIGNALFD. 207 that this is a race condition regardless of EV_SIGNALFD.
89 - backport inotify code to C89. 208 - backport inotify code to C89.
90 - inotify file descriptors could leak into child processes. 209 - inotify file descriptors could leak into child processes.
91 - ev_stat watchers could keep an errornous extra ref on the loop, 210 - ev_stat watchers could keep an erroneous extra ref on the loop,
92 preventing exit when unregistering all watchers (testcases 211 preventing exit when unregistering all watchers (testcases
93 provided by ry@tinyclouds.org). 212 provided by ry@tinyclouds.org).
94 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration 213 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
95 symbols to make it easier for apps to do their own fd management. 214 symbols to make it easier for apps to do their own fd management.
96 - support EV_IDLE_ENABLE being disabled in ev++.h 215 - support EV_IDLE_ENABLE being disabled in ev++.h
… …
154 - correctly zero the idx values for arrays, so destroying and 273 - correctly zero the idx values for arrays, so destroying and
155 reinitialising the default loop actually works (patch by 274 reinitialising the default loop actually works (patch by
156 Malek Hadj-Ali). 275 Malek Hadj-Ali).
157 - implement ev_suspend and ev_resume. 276 - implement ev_suspend and ev_resume.
158 - new EV_CUSTOM revents flag for use by applications. 277 - new EV_CUSTOM revents flag for use by applications.
159 - add documentation section about priorites. 278 - add documentation section about priorities.
160 - add a glossary to the dcoumentation. 279 - add a glossary to the documentation.
161 - extend the ev_fork description slightly. 280 - extend the ev_fork description slightly.
162 - optimize a jump out of call_pending. 281 - optimize a jump out of call_pending.
163 282
1643.53 Sun Feb 15 02:38:20 CET 2009 2833.53 Sun Feb 15 02:38:20 CET 2009
165 - fix a bug in event pipe creation on win32 that would cause a 284 - fix a bug in event pipe creation on win32 that would cause a

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