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Comparing libev/Changes (file contents):
Revision 1.174 by root, Sat Mar 27 02:26:27 2010 UTC vs.
Revision 1.281 by root, Mon Oct 8 15:43:35 2012 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: ABI??? API????? Changes??? 3TODO: ev_loop_wakeup
4TODO: win32 write() to socket for signal handling 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
9
10TODO: document the special problem of signals around fork.
11TODO: store pid for each signal
12TODO: document file descriptor usage per loop
13TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for differign pid, clean up in loop_fork
14TODO: embed watchers need updating when fd changes
15TODO: document portbaility requirements for atomic pointer access
16 - destroying a non-default loop would stop the global waitpid
17 watcher (Denis Bilenko).
18 - queueing pending watchers of higher priority from a watcher now invokes
19 them in a timely fashion (reported by Denis Bilenko).
20 - add throw() to all libev functions that cannot throw exceptions, for
21 further code size decrease when compiling for C++.
22 - add throw () to callbacks that must not throw exceptions (allocator,
23 syserr, loop acquire/release, periodic reschedule cbs).
24 - fix event_base_loop return code, add event_get_callback, event_base_new,
25 event_base_get_method calls to improve libevent 1.x emulation and add
26 some libevent 2.x functionality (based on a patch by Jeff Davey).
27 - add more memory fences to fix a bug reported by Jeff Davey. Better
28 be overfenced than underprotected.
29 - ev_run now returns a boolean status (true meaning watchers are
30 still active).
31 - ev_once: undef EV_ERROR in ev_kqueue.c, to avoid clashing with
32 libev's EV_ERROR (reported by 191919).
33 - (ecb) add memory fence support for xlC (Darin McBride).
34 - (ecb) add memory fence support for gcc-mips (Anton Kirilov).
35 - (ecb) add memory fence support for gcc-alpha (Christian Weisgerber).
36 - work around some kernels losing file descriptors by leaking
37 the kqueue descriptor in the child.
38 - include sys/syscall.h instead of plain syscall.h.
39 - check for io watcher loops in ev_verify, check for the most
40 common reported usage bug in ev_io_start.
41 - chose socket vs. WSASocket at compiletime using EV_USE_WSASOCKET.
42 - always use WSASend/WSARecv directly on windows, hoping that this
43 works in all cases (unlike read/write/send/recv...).
44 - try to detect signals around a fork faster (test program by
45 Denis Bilenko).
46 - work around recent glibc versions that leak memory in realloc.
47 - rename ev::embed::set to ev::embed::set_embed to avoid clashing
48 the watcher base set (loop) method.
49 - rewrite the async/signal pipe logic to always keep a valid fd, which
50 simplifies (and hopefuly correctifies :) the race checking
51 on fork, at the cost of one extra fd.
52
534.11 Sat Feb 4 19:52:39 CET 2012
54 - INCOMPATIBLE CHANGE: ev_timer_again now clears the pending status, as
55 was documented already, but not implemented in the repeating case.
56 - new compiletime symbols: EV_NO_SMP and EV_NO_THREADS.
57 - fix a race where the workaround against the epoll fork bugs
58 caused signals to not be handled anymore.
59 - correct backend_fudge for most backends, and implement a windows
60 specific workaround to avoid looping because we call both
61 select and Sleep, both with different time resolutions.
62 - document range and guarantees of ev_sleep.
63 - document reasonable ranges for periodics interval and offset.
64 - rename backend_fudge to backend_mintime to avoid future confusion :)
65 - change the default periodic reschedule function to hopefully be more
66 exact and correct even in corner cases or in the far future.
67 - do not rely on -lm anymore: use it when available but use our
68 own floor () if it is missing. This should make it easier to embed,
69 as no external libraries are required.
70 - strategically import macros from libecb and mark rarely-used functions
71 as cache-cold (saving almost 2k code size on typical amd64 setups).
72 - add Symbols.ev and Symbols.event files, that were missing.
73 - fix backend_mintime value for epoll (was 1/1024, is 1/1000 now).
74 - fix #3 "be smart about timeouts" to not "deadlock" when
75 timeout == now, also improve the section overall.
76 - avoid "AVOIDING FINISHING BEFORE RETURNING" idiom.
77 - support new EV_API_STATIC mode to make all libev symbols
78 static.
79 - supply default CFLAGS of -g -O3 with gcc when original CFLAGS
80 were empty.
81
824.04 Wed Feb 16 09:01:51 CET 2011
83 - fix two problems in the native win32 backend, where reuse of fd's
84 with different underlying handles caused handles not to be removed
85 or added to the select set (analyzed and tested by Bert Belder).
86 - do no rely on ceil() in ev_e?poll.c.
87 - backport libev to HP-UX versions before 11 v3.
88 - configure did not detect nanosleep and clock_gettime properly when
89 they are available in the libc (as opposed to -lrt).
90
914.03 Tue Jan 11 14:37:25 CET 2011
92 - officially support polling files with all backends.
93 - support files, /dev/zero etc. the same way as select in the epoll
94 backend, by generating events on our own.
95 - ports backend: work around solaris bug 6874410 and many related ones
96 (EINTR, maybe more), with no performance loss (note that the solaris
97 bug report is actually wrong, reality is far more bizarre and broken
98 than that).
99 - define EV_READ/EV_WRITE as macros in event.h, as some programs use
100 #ifdef to test for them.
101 - new (experimental) function: ev_feed_signal.
102 - new (to become default) EVFLAG_NOSIGMASK flag.
103 - new EVBACKEND_MASK symbol.
104 - updated COMMON IDIOMS SECTION.
105
1064.01 Fri Nov 5 21:51:29 CET 2010
107 - automake fucked it up, apparently, --add-missing -f is not quite enough
108 to make it update its files, so 4.00 didn't install ev++.h and
109 event.h on make install. grrr.
110 - ev_loop(count|depth) didn't return anything (Robin Haberkorn).
111 - change EV_UNDEF to 0xffffffff to silence some overzealous compilers.
112 - use "(libev) " prefix for all libev error messages now.
113
1144.00 Mon Oct 25 12:32:12 CEST 2010
5 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading. 115 - "PORTING FROM LIBEV 3.X TO 4.X" (in ev.pod) is recommended reading.
6 - ev_embed_stop did not correctly stop the watcher (very good 116 - ev_embed_stop did not correctly stop the watcher (very good
7 testcase by Vladimir Timofeev). 117 testcase by Vladimir Timofeev).
118 - ev_run will now always update the current loop time - it erroneously
119 didn't when idle watchers were active, causing timers not to fire.
120 - fix a bug where a timeout of zero caused the timer not to fire
121 in the libevent emulation (testcase by Péter Szabó).
8 - applied win32 fixes by Michael Lenaghan (also James Mansion). 122 - applied win32 fixes by Michael Lenaghan (also James Mansion).
9 - replace EV_MINIMAL by EV_FEATURES. 123 - replace EV_MINIMAL by EV_FEATURES.
124 - prefer EPOLL_CTL_ADD over EPOLL_CTL_MOD in some more cases, as it
125 seems the former is *much* faster than the latter.
126 - linux kernel version detection (for inotify bug workarounds)
127 did not work properly.
128 - reduce the number of spurious wake-ups with the ports backend.
10 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu). 129 - remove dependency on sys/queue.h on freebsd (patch by Vanilla Hsu).
130 - do async init within ev_async_start, not ev_async_set, which avoids
131 an API quirk where the set function must be called in the C++ API
132 even when there is nothing to set.
11 - add (undocumented) EV_ENABLE when adding events with kqueue, 133 - add (undocumented) EV_ENABLE when adding events with kqueue,
134 this might help with OS X, which seems to need it despite documenting
12 this might help (helpfully pointed out by Tilghman Lesher). 135 not to need it (helpfully pointed out by Tilghman Lesher).
136 - do not use poll by default on freebsd, it's broken (what isn't
137 on freebsd...).
138 - allow to embed epoll on kernels >= 2.6.32.
13 - configure now prepends -O3, not appends it, so one can still 139 - configure now prepends -O3, not appends it, so one can still
14 override it. 140 override it.
141 - ev.pod: greatly expanded the portability section, added a porting
142 section, a description of watcher states and made lots of minor fixes.
15 - disable poll backend on AIX, the poll header spams the namespace 143 - disable poll backend on AIX, the poll header spams the namespace
16 and it's not worth working around dead platforms (reported 144 and it's not worth working around dead platforms (reported
17 and analyzed by Aivars Kalvans). 145 and analyzed by Aivars Kalvans).
18 - improve header file compatibility of the standalone eventfd code 146 - improve header file compatibility of the standalone eventfd code
19 in an obscure case. 147 in an obscure case.
… …
22 no sscanf dependency). 150 no sscanf dependency).
23 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings. 151 - new EV_CHILD_ENABLE and EV_SIGNAL_ENABLE configurable settings.
24 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs. 152 - update libev.m4 HAVE_CLOCK_SYSCALL test for newer glibcs.
25 - add section on accept() problems to the manpage. 153 - add section on accept() problems to the manpage.
26 - rename EV_TIMEOUT to EV_TIMER. 154 - rename EV_TIMEOUT to EV_TIMER.
27 - rename ev_loop_count/depth/verify. 155 - rename ev_loop_count/depth/verify/loop/unloop.
156 - remove ev_default_destroy and ev_default_fork.
28 - switch to two-digit minor version. 157 - switch to two-digit minor version.
158 - work around an apparent gentoo compiler bug.
159 - define _DARWIN_UNLIMITED_SELECT. just so.
160 - use enum instead of #define for most constants.
161 - improve compatibility to older C++ compilers.
162 - (experimental) ev_run/ev_default_loop/ev_break/ev_loop_new have now
163 default arguments when compiled as C++.
164 - enable automake dependency tracking.
165 - ev_loop_new no longer leaks memory when loop creation failed.
166 - new ev_cleanup watcher type.
29 167
303.9 Thu Dec 31 07:59:59 CET 2009 1683.9 Thu Dec 31 07:59:59 CET 2009
31 - signalfd is no longer used by default and has to be requested 169 - signalfd is no longer used by default and has to be requested
32 explicitly - this means that easy to catch bugs become hard to 170 explicitly - this means that easy to catch bugs become hard to
33 catch race conditions, but the users have spoken. 171 catch race conditions, but the users have spoken.
34 - point out the unspecified signal mask in the documentation, and 172 - point out the unspecified signal mask in the documentation, and
35 that this is a race condition regardless of EV_SIGNALFD. 173 that this is a race condition regardless of EV_SIGNALFD.
36 - backport inotify code to C89. 174 - backport inotify code to C89.
37 - inotify file descriptors could leak into child processes. 175 - inotify file descriptors could leak into child processes.
38 - ev_stat watchers could keep an errornous extra ref on the loop, 176 - ev_stat watchers could keep an erroneous extra ref on the loop,
39 preventing exit when unregistering all watchers (testcases 177 preventing exit when unregistering all watchers (testcases
40 provided by ry@tinyclouds.org). 178 provided by ry@tinyclouds.org).
41 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration 179 - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
42 symbols to make it easier for apps to do their own fd management. 180 symbols to make it easier for apps to do their own fd management.
43 - support EV_IDLE_ENABLE being disabled in ev++.h 181 - support EV_IDLE_ENABLE being disabled in ev++.h
… …
49 - changed minimum glibc requirement from glibc 2.9 to 2.7, for 187 - changed minimum glibc requirement from glibc 2.9 to 2.7, for
50 signalfd. 188 signalfd.
51 - add missing string.h include (Denis F. Latypoff). 189 - add missing string.h include (Denis F. Latypoff).
52 - only replace ev_stat.prev when we detect an actual difference, 190 - only replace ev_stat.prev when we detect an actual difference,
53 so prev is (almost) always different to attr. this might 191 so prev is (almost) always different to attr. this might
54 have caused the probems with 04_stat.t. 192 have caused the problems with 04_stat.t.
55 - add ev::timer->remaining () method to C++ API. 193 - add ev::timer->remaining () method to C++ API.
56 194
573.8 Sun Aug 9 14:30:45 CEST 2009 1953.8 Sun Aug 9 14:30:45 CEST 2009
58 - incompatible change: do not necessarily reset signal handler 196 - incompatible change: do not necessarily reset signal handler
59 to SIG_DFL when a sighandler is stopped. 197 to SIG_DFL when a sighandler is stopped.
60 - ev_default_destroy did not properly free or zero some members, 198 - ev_default_destroy did not properly free or zero some members,
61 potentially causing crashes and memory corruption on repated 199 potentially causing crashes and memory corruption on repeated
62 ev_default_destroy/ev_default_loop calls. 200 ev_default_destroy/ev_default_loop calls.
63 - take advantage of signalfd on GNU/Linux systems. 201 - take advantage of signalfd on GNU/Linux systems.
64 - document that the signal mask might be in an unspecified 202 - document that the signal mask might be in an unspecified
65 state when using libev's signal handling. 203 state when using libev's signal handling.
66 - take advantage of some GNU/Linux calls to set cloexec/nonblock 204 - take advantage of some GNU/Linux calls to set cloexec/nonblock
… …
101 - correctly zero the idx values for arrays, so destroying and 239 - correctly zero the idx values for arrays, so destroying and
102 reinitialising the default loop actually works (patch by 240 reinitialising the default loop actually works (patch by
103 Malek Hadj-Ali). 241 Malek Hadj-Ali).
104 - implement ev_suspend and ev_resume. 242 - implement ev_suspend and ev_resume.
105 - new EV_CUSTOM revents flag for use by applications. 243 - new EV_CUSTOM revents flag for use by applications.
106 - add documentation section about priorites. 244 - add documentation section about priorities.
107 - add a glossary to the dcoumentation. 245 - add a glossary to the dcoumentation.
108 - extend the ev_fork description slightly. 246 - extend the ev_fork description slightly.
109 - optimize a jump out of call_pending. 247 - optimize a jump out of call_pending.
110 248
1113.53 Sun Feb 15 02:38:20 CET 2009 2493.53 Sun Feb 15 02:38:20 CET 2009
… …
188 do similar changes for event.c. 326 do similar changes for event.c.
189 327
1903.45 Tue Oct 21 21:59:26 CEST 2008 3283.45 Tue Oct 21 21:59:26 CEST 2008
191 - disable inotify usage on linux <2.6.25, as it is broken 329 - disable inotify usage on linux <2.6.25, as it is broken
192 (reported by Yoann Vandoorselaere). 330 (reported by Yoann Vandoorselaere).
193 - ev_stat errornously would try to add inotify watchers 331 - ev_stat erroneously would try to add inotify watchers
194 even when inotify wasn't available (this should only 332 even when inotify wasn't available (this should only
195 have a performance impact). 333 have a performance impact).
196 - ev_once now passes both timeout and io to the callback if both 334 - ev_once now passes both timeout and io to the callback if both
197 occur concurrently, instead of giving timeouts precedence. 335 occur concurrently, instead of giving timeouts precedence.
198 - disable EV_USE_INOTIFY when sys/inotify.h is too old. 336 - disable EV_USE_INOTIFY when sys/inotify.h is too old.
… …
266 - enable inlining with gcc versions 2 and 3. 404 - enable inlining with gcc versions 2 and 3.
267 - work around broken poll implementations potentially 405 - work around broken poll implementations potentially
268 not clearing revents field in ev_poll (Brandon Black) 406 not clearing revents field in ev_poll (Brandon Black)
269 (no such systems are known at this time). 407 (no such systems are known at this time).
270 - work around a bug in realloc on openbsd and darwin, 408 - work around a bug in realloc on openbsd and darwin,
271 also makes the errornous valgrind complaints 409 also makes the erroneous valgrind complaints
272 go away (noted by various people). 410 go away (noted by various people).
273 - fix ev_async_pending, add c++ wrapper for ev_async 411 - fix ev_async_pending, add c++ wrapper for ev_async
274 (based on patch sent by Johannes Deisenhofer. 412 (based on patch sent by Johannes Deisenhofer).
275 - add sensible set method to ev::embed. 413 - add sensible set method to ev::embed.
276 - made integer constants type int in ev.h. 414 - made integer constants type int in ev.h.
277 415
2783.2 Wed Apr 2 17:11:19 CEST 2008 4163.2 Wed Apr 2 17:11:19 CEST 2008
279 - fix a 64 bit overflow issue in the select backend, 417 - fix a 64 bit overflow issue in the select backend,

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