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a8155c62
|
2018-12-09T14:48:44
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|
Do not check O_NONBLOCK for invalid fds
Fixes: 6f988ee1 ("Merge branch 'check-O_NONBLOCK-in-debug'")
(cherry picked from commit 9d3a415a99bbc6a7e0f0b12ae3c6c5c7e4613cf1)
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ca69a10f
|
2018-11-13T08:24:55
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event: add some debug information into loop for event_base_free_queues_()
Refs: 7c8d0152dda18ecc52d3099fea235b04ddb850d9 ("Free event queues even
for recursive finalizers")
(cherry picked from commit f2da6198401e2ef6763e5acc5d4e51a9928b9dde)
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a39898f3
|
2018-11-04T01:21:48
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Merge branch 'check-O_NONBLOCK-in-debug'
* check-O_NONBLOCK-in-debug:
regress: use non blocking descriptors whenever it is possible
assert that fds are nonblocking in debug mode
Closes: nmathewson/Libevent#90
(cherry picked from commit 6f988ee161680925fc3308f17d293c680e3ac916)
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ca4b6404
|
2018-10-31T01:22:30
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Merge branch 'event-ET-#636-v2'
* event-ET-#636-v2:
Preserve ET bit for backends with changelist
Epoll ET setting lost with multiple events for same fd
Cover ET with multiple events for same fd
Add ET flag into event_base_dump_events()
Fixes: #636
(cherry picked from commit 33053cdd8a9e1a7330b47759dee9cb209bed8f1b)
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d9d1c09e
|
2018-04-24T00:59:11
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|
Notify event base if there are no more events, so it can exit without delay
Fixes: #623
(cherry picked from commit 23c2914f6b430f2c2d74c267c13ffab3dda1b325)
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4f0f40e3
|
2018-02-27T21:12:14
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|
Fix base unlocking in event_del() if event_base_set() runned in another thread
Image next situation:
T1: T2:
event_del_()
lock the event.ev_base.th_base_lock
event_del_nolock_() event_set_base()
unlock the event.ev_base.th_base_lock
In this case we will unlock the wrong base after event_del_nolock_()
returns, and deadlock is likely to happens, since event_base_set() do
not check any mutexes (due to it is possible to do this only if event is
not inserted anywhere).
So event_del_() has to cache the base before removing the event, and
cached base.th_base_lock after.
(cherry picked from commit 08a0d366073eacf800027725891c2f668f2f0144)
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f45543e2
|
2018-02-27T21:08:35
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Convert event_debug_*() helpers from macros to static functions
(cherry picked from commit f0fd92f2c41fd5bf3b270ee338089dd9329d0354)
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27dee54d
|
2017-12-09T14:39:07
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|
If precise_time is false, we should not set EVENT_BASE_FLAG_PRECISE_TIMER
Fixes: 630f077c296de61c7b99ed83bf30de11e75e2740 ("Simple unit tests for
monotonic timers")
(cherry picked from commit 6cce7458d0f94e320f201eb5be94866e6918d66c)
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43d92a6d
|
2017-08-07T11:06:28
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|
Fix race in access to ev_res from event loop with event_active()
Detected using ThreadSanitizer, resolved by capturing the value
of ev_res in a local variable while the event is locked, then
passing that captured variable to the callback.
TSAN report:
I0728 14:35:09.822118 WARNING: ThreadSanitizer: data race (pid=815501)
I0728 14:35:09.822186 Write of size 2 at 0x7b2c00001bf2 by thread T80 (mutexes: write M1110835549570434736):
I0728 14:35:09.822248 #0 event_active_nolock_ libevent/event.c:2893:14 (0a2b90577e830d775300664df77d0b91+0x1fdab28)
I0728 14:35:09.822316 #1 event_active libevent/event.c:2858:2 (0a2b90577e830d775300664df77d0b91+0x1fdd10e)
I0728 14:35:09.822379 #2 Envoy::Event::TimerImpl::enableTimer(std::chrono::duration<long, std::ratio<1l, 1000l> > const&) envoy/source/common/event/timer_impl.cc:24:5 (0a2b90577e830d775300664df77d0b91+0x459fa0)
...
I0728 14:35:09.824146 Previous read of size 2 at 0x7b2c00001bf2 by main thread:
I0728 14:35:09.824232 #0 event_process_active_single_queue libevent/event.c:1646:33 (0a2b90577e830d775300664df77d0b91+0x1fdf83d)
I0728 14:35:09.824350 #1 event_process_active libevent/event.c (0a2b90577e830d775300664df77d0b91+0x1fd9ad8)
I0728 14:35:09.824445 #2 event_base_loop libevent/event.c:1961 (0a2b90577e830d775300664df77d0b91+0x1fd9ad8)
I0728 14:35:09.824550 #3 Envoy::Event::DispatcherImpl::run(Envoy::Event::Dispatcher::RunType) envoy/source/common/event/dispatcher_impl.cc:166:3 (0a2b90577e830d775300664df77d0b91+0x4576d9)
...
Fixes: #543 (pull-request)
(cherry picked from commit 27934f0b39991172dcfdad23faea9874dd386f10)
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|
876c7ac7
|
2015-04-13T08:54:52
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Return from event_del() after the last event callback termination
Delete the event from the queue before blocking for the current
event callback termination.
Ensures that no callback is being executed when event_del() returns,
hence making this function a secure mechanism to access data which is
handled in the event callack.
Fixes: #236
Fixes: #225
Refs: 6b4b77a
Fixes: del_wait
(cherry picked from commit 0b4b0efdb8ee710ccae5bad320fc24843fd428e5)
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27a2ef5c
|
2017-03-24T16:49:59
|
|
Make event_count macros cleaner
Fixes: #489
(cherry picked from commit 177e2171cb44e3929fbb0ec43b1bffb325b0e8ed)
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9806b126
|
2017-03-13T21:05:32
|
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Merge branch 'cmake-missing-bits'
This patchset adds next missing things (in compare to autotools):
- pkgconfig
- event_pthreads/event_openssl
- compile shared/static libraries always
And some fixes, because it will not build after fixing other things:
- export missing symbols for cmake (-fvisibility=hidden)
* cmake-missing-bits:
cmake: support visibility for AppleClang too
cmake: fix export absolute path and relative path and cleanup a bit
cmake: generate and install pkgconfig files
cmake: build SHARED and STATIC libraries (like autoconf does)
cmake: add missing event_openssl/event_pthreads libraries
Export symbols for -fvisibility=hidden (under cmake)
Refs: #246
(cherry picked from commit 489991a2b2628ba1ff4e6879b9f67ec35d224c38)
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40da44bd
|
2017-01-29T17:23:14
|
|
Fix -Werror=implicit-fallthrough (fixes gcc-7)
Fixes: #447
(cherry picked from commit 94e7dcebc320bf496ff6b613d8e4b771fa0a161c)
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88640aa1
|
2015-12-27T02:15:03
|
|
event_reinit: make signals works after fork() without evsig_add()
event_reinit() removes the event, but only evsig_add puts it back. So any
signals set up before event_reinit will be ignored until another signal is
added.
Fixes: #307
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ad0c237b
|
2015-12-27T01:43:37
|
|
event_reinit: always re-init signal's socketpair
Before this patch event_reinit() only closes the signal socketpair fds and
recreates them if signals have been added, but this is wrong, since socketpair
fds created on backend init, and if we will not re-create them bad things in
child/parent signal handling will happens (and indeed this is what happens for
non-reinit backends like select).
Fixes: #307
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7c8d0152
|
2015-10-30T13:34:30
|
|
Free event queues even for recursive finalizers
For finalizers we can register yet another finalizer out from finalizer, and
iff finalizer will be in active_later_queue we can add finalizer to
activequeues, and we will have events in activequeues after event_base_free()
returns, which is not what we want (we even have an assertion for this).
A simple case is bufferevent with underlying (i.e. filters) in inactive queue.
Fixes: regress bufferevent/bufferevent_socket_filter_inactive
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f337296a
|
2015-10-04T03:35:43
|
|
Fix checking for make_base_notifiable()
Fixes: a068f2e5 ("event_debug_created_threadable_ctx_: fix compilation without
debug mode")
Found-after: 3e56da23 ("travis: add builds without debug mode into matrix")
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a068f2e5
|
2015-09-29T20:36:39
|
|
event_debug_created_threadable_ctx_: fix compilation without debug mode
The following command failed before:
$ ./configure --disable-debug-mode
Fixes: dcfb19a27b7760299bc9e7291c9abd88c59fd91a ("Debug mode option to error on
evthread init AFTER other event calls.")
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dcfb19a2
|
2015-05-15T02:58:14
|
|
Debug mode option to error on evthread init AFTER other event calls.
- A handy event_enable_debug_mode() feature which will error and abort the
application if any thread-aware libevent functions are called BEFORE the
evthread API has been initialized (manually, or through
evthread_use_windows_threads() / evthread_use_pthreads()
- This is done by setting the global debug variable
'event_debug_created_threadable_ctx_' whenever the following functions
are called:
evthreadimpl_lock_alloc_()
evthreadimpl_cond_alloc_()
event_base_new_with_config() <- this checks to see if the thread
callbacks are enabled first, so we
have to manually set the variable.
- Example:
int main(int argc, char ** argv) {
struct event_base * base;
event_enable_debug_mode();
base = event_base_new();
evthread_use_pthreads();
return 0;
}
When executed, the program will throw an error and exit:
[err] evthread initialization must be called BEFORE anything else!
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6e7a580c
|
2015-03-24T17:45:52
|
|
tab
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|
38cef641
|
2015-03-24T17:29:40
|
|
fix the return value of event_deferred_cb_schedule_
|
|
a77a82a0
|
2015-02-04T08:37:32
|
|
Merge remote-tracking branch 'azat/be-pair-fix-freeing-shared-lock-v5'
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e5c87d18
|
2015-01-26T00:29:15
|
|
event_free_debug_globals_locks(): disable lock debugging
This will allow to use library event after
event_free_debug_globals_locks()/libevent_global_shutdown() without
invalid read/write's.
|
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|
941faaed
|
2015-01-08T04:45:27
|
|
event: call event_disable_debug_mode() in libevent_global_shutdown()
This will avoid leaking of event_debug_map_HT_GROW
I buildin it into libevent_glboal_shutdown() because
event_disable_debug_mode() -> event_free_debug_globals() ->
event_free_debug_globals_locks() will clean event_debug_map_lock_ that
used in event_disable_debug_mode().
|
|
f2645f80
|
2014-11-19T12:18:05
|
|
Implement new/free for struct evutil_monotonic_timer and export monotonic time functions
|
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|
37145c56
|
2014-11-30T21:07:55
|
|
Merge remote-tracking branch 'public/patches-2.0'
Conflicts:
ChangeLog
event.c
|
|
3c7d6fca
|
2014-09-22T12:19:37
|
|
Fix race caused by event_active
There is a race between manual event_active and natural event activation. If both happen at the same time on the same FD, they would both be protected by the same event base lock except for 1 LoC where the fields of struct event are read without any kind of lock. This commit does those reads into local variables inside the lock and then invokes the callback with those local arguments outside the lock. In 2.0-stable, none of this is inside the lock; in HEAD, only the callback is read inside the lock. This gets the callback and all 3 arguments inside the lock before calling it outside the lock.
|
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3cc0eace
|
2014-09-16T22:25:52
|
|
Fix use-after-free error in EV_CLOSURE_EVENT callback
|
|
|
ec99dd82
|
2014-03-18T11:25:58
|
|
Fix a use-after-free error on EV_CLOSURE_EVENT_FINALIZE callbacks
After running the callback, we were checking evcb->evcb_closure to
decide whether to call mm_free(ev). But the callback itself might
have freed ev, so we need to grab that field first
Found with AddressSanitizer
|
|
|
98059721
|
2014-03-06T10:09:03
|
|
Move assert(ev) to before we use ev in EV_CLOSURE_EVENT_FINALIZE case
Based on a patch from Harlan Stenn.
|
|
|
2ea15ed0
|
2014-01-27T14:54:55
|
|
Tweaked callbacks to prevent race condition (https://github.com/libevent/libevent/issues/104)
|
|
|
40830f16
|
2014-01-27T13:03:36
|
|
Tweaked callbacks to prevent race condition (https://github.com/libevent/libevent/issues/104)
|
|
b1b69ac7
|
2014-01-17T23:20:42
|
|
Implemented EV_CLOSED event for epoll backend (EPOLLRDHUP).
- Added new EV_CLOSED event - detects premature connection close
by clients without the necessity of reading all the pending
data. Does not depend on EV_READ and/or EV_WRITE.
- Added new EV_FEATURE_EARLY_CLOSED feature for epoll.
Must be supported for listening to EV_CLOSED event.
- Added new regression test: test-closed.c
- All regression tests passed (test/regress and test/test.sh)
- strace output of test-closed using EV_CLOSED:
socketpair(PF_LOCAL, SOCK_STREAM, 0, [6, 7]) = 0
sendto(6, "test string\0", 12, 0, NULL, 0) = 12
shutdown(6, SHUT_WR) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLRDHUP, {u32=7, u64=7}}) = 0
epoll_wait(3, {{EPOLLRDHUP, {u32=7, u64=7}}}, 32, 3000) = 1
epoll_ctl(3, EPOLL_CTL_MOD, 7, {EPOLLRDHUP, {u32=7, u64=7}}) = 0
fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4), ...})
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYM...
write(1, "closed_cb: detected connection close "..., 45) = 45
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f9e091bf
|
2014-01-06T12:11:30
|
|
Merge remote-tracking branch 'asweeny86/event-count-max'
|
|
efbd3dcf
|
2014-01-05T16:29:52
|
|
Fixed bug using wrong variable in max event compare
|
|
|
5173bef5
|
2013-12-30T14:06:20
|
|
Add access to max event count stats
This commit provides an interface for accessing and resetting the maximum
number of events in a given period. This information provides better insight
into event queue pressure.
|
|
|
87fa2b00
|
2013-12-23T20:46:38
|
|
Unit tests for active_by_fd; unsupport active_by_fd(TIMEOUT)
[It turns out that event_base_active_by_fd(TIMEOUT) didn't actually
work right. Feel free to add it back in as a patch.]
|
|
|
48659433
|
2013-12-21T23:32:10
|
|
Add event_base_active_by_signal by analogy
|
|
|
5c9da9a8
|
2013-12-21T23:21:33
|
|
Sanity-check arguments to event_base_active_by_fd()
|
|
|
93369ff4
|
2013-12-21T23:15:41
|
|
Merge remote-tracking branch 'ghazel/event_base_active_by_fd'
|
|
|
1c06985a
|
2013-08-06T20:00:53
|
|
Add an assertion for another of the complaints from coverity. See 1b065d07df196
|
|
|
69b5c647
|
2013-08-06T19:08:42
|
|
Move event_debug_note_teardown_ before mm_free.
This isn't a bug, since only the pointer value of ev was used, but
it's probably best not to tempt fate. Found by coverity.
|
|
|
1b065d07
|
2013-08-06T19:06:58
|
|
Add some assertions to please coverity.
In event_process_active_single_queue, EVLIST_INIT must be set on any
event that uses one of the event-only closures, and so "ev" will be
set in those cases. But coverity's worried here (CIDs numerous). So
instead, just add the assertions that should make it happy.
|
|
0fa107d8
|
2013-07-02T16:01:02
|
|
Added event_base_get_num_events()
|
|
|
3dc2d8ab
|
2013-05-28T10:14:51
|
|
Remove a debugging assert that should not have been left in
|
|
|
d3d999a1
|
2013-05-10T20:22:56
|
|
Missed lock acquire/release in event_base_cancel_single_callback_()
Call backtrace:
...
event_queue_remove_active()
event_callback_cancel_nolock_()
event_base_cancel_single_callback_()
event_base_free_()
event_base_free()
...
Fix for e9ebef83
|
|
|
f2925d78
|
2013-04-30T22:57:25
|
|
Fix a windows compilation regression
This is github issue #57; reported by "efekty". I assume the compiler
is MSVC.
|
|
|
3555befd
|
2013-04-26T12:27:05
|
|
Merge branch '21_deadlock_fix_v2'
|
|
|
5d11f4f3
|
2013-04-26T11:57:40
|
|
Make the event_finalize* functions return an error code
|
|
|
a800b913
|
2013-04-26T11:36:43
|
|
More documentation for finalization feature
|
|
|
e9ebef83
|
2013-04-09T21:14:52
|
|
Always run pending finalizers when event_base_free() is called
There was actually a bug in the original version of this: it tried to
run the finalizers after (potentially) setting current_base to NULL;
but those finalizers could themselves (potentially) be invoking stuff
that needed to know about the current event_base. So the right time to
do it is _before_ clearing current_base.
|
|
|
8eedeabe
|
2013-03-28T14:13:19
|
|
Implement event_finalize() and related functions to avoid certain deadlocks
|
|
|
5e6fa2a3
|
2013-04-24T13:23:15
|
|
event_base_update_cache_time should be a no-op if the loop isn't running
|
|
9443868d
|
2013-03-05T11:29:33
|
|
Double-check next timeout when adding events
When resuming the system from a suspended state, the ev_timeout field
of a scheduled timer event may be in the past. This leads to
unexpected behavior when scheduling a short-duration timer event
immediately after returning from suspension, because the new event
does not land on top of the timeout minheap and so the event loop
(blocked on a possibly long-duration timeout) is not notified.
This patch checks for this condition and, if it obtains, notifies the
event loop.
|
|
0c6ec5d8
|
2013-02-07T17:20:08
|
|
use FormatMessage for winsock errors
as discussed here:
http://archives.seul.org/libevent/users/Feb-2013/msg00004.html
|
|
|
5623e803
|
2013-02-12T15:10:50
|
|
Make event_remove_timer behave correctly with persistent timers
|
|
|
865a1426
|
2013-01-16T16:31:08
|
|
event_base_active_by_fd
|
|
|
bf7a0ff2
|
2013-01-11T16:37:34
|
|
When EWOULDBLOCK is not EAGAIN, treat it as equivalent to it
Acording to http://stackoverflow.com/questions/7003234/which-systems-define-eagain-and-ewouldblock-as-different-values
there are some older unixes that distinguish these error.s
|
|
|
f2703b2e
|
2012-11-18T01:40:13
|
|
Fix a warning when building without threading.
|
|
|
e3b2e086
|
2012-11-16T16:15:03
|
|
Add an event_remove_timer() to remove timer on an event without deleting it
|
|
|
1fda4928
|
2012-11-16T12:06:40
|
|
Merge remote-tracking branch 'origin/patches-2.0'
|
|
|
e3cccf38
|
2012-11-16T11:55:27
|
|
Avoid crash when event_pending() called with no event_base set on event
Instead, give a warning and return 0.
Reported by Antony Dovgal on github as
https://github.com/libevent/libevent/issues/19
|
|
|
c17dd591
|
2011-07-15T11:10:54
|
|
Free dangling event_once objects on event_base_free()
This patch makes us keep event_once objects in a doubly linked list
so we can free any once that haven't triggered when we call
event_base_free().
|
|
|
56e48c10
|
2012-11-02T10:58:02
|
|
Fix a few mingw64 incompatibilities introduced since 2.0
|
|
|
2e6a9850
|
2012-11-01T18:12:07
|
|
Merge remote-tracking branch 'github/20_win64_compilation' into 21_win64_compilation
Conflicts:
event.c
http.c
sample/event-read-fifo.c
test/regress_bufferevent.c
|
|
|
94866c27
|
2012-11-01T17:38:34
|
|
Compile without warnings on mingw64
This is mostly a matter of catching cases where we were still
assuming that evutil_socket_t could be used as an int.
|
|
|
ffe1643b
|
2012-09-10T13:43:26
|
|
Add missing return value in event_base_foreach_event
Fix for github issue nmathewson/Libevent #65
Found by Joachim Bauch
|
|
|
232055ef
|
2012-09-07T09:58:24
|
|
Tweak patch for event_base_foreach_event()
* Fix whitespace
* Explain return value from callback function
* Reinstate return value so that caller can tell whether forech
exited early.
* Rename event_base_foreach_event_() to
event_base_foreach_event_nolock_().
* Use event_base_foreach_event_cb_fn typedef in more places
* Be more dire about undefined behavior.
|
|
84fd6d75
|
2012-09-07T09:47:50
|
|
Expose event_base_foreach_event() as a public API.
|
|
|
6c14d564
|
2012-07-16T15:44:07
|
|
Merge remote-tracking branch 'origin/patches-2.0'
Conflicts:
event.c
win32select.c
|
|
|
9cd5acb5
|
2012-06-28T12:00:57
|
|
Make th_base_lock nonrecursive
This is necessary for making some thread libraries work with
event.c, and might get better performance with others.
The biggest change required here was that we needed to make some
internal code that had previously called event_add and event_del
call the nolock variants.
|
|
be7a95c6
|
2012-06-15T01:01:05
|
|
Make event_pending() threadsafe.
(Commit message by Nick)
|
|
|
7d6aa5ee
|
2012-05-09T12:05:07
|
|
Add an event_base_loopcontinue() to tell libevent to rescan right away
|
|
|
c0e425ab
|
2012-05-09T11:06:06
|
|
Restore our priority-inversion-prevention code with deferreds
Back when deferred_cb stuff had its own queue, the queue was always
executed, but we never ran more than 16 callbacks per iteration.
That made for two problems:
1: Because deferred_cb stuff would always run, and had no priority,
it could cause priority inversion.
2: It doesn't respect the max_dispatch_interval code.
Then, when I refactored deferred_cb to be a special case of
event_callback, that solved the above issues, but made for two more
issues:
3: Because deferred_cb stuff would always get the default priority,
it could could low-priority bufferevents to get too much priority.
4: With code like bufferevent_pair, it's easy to get into a
situation where two deferreds keep adding one another, preventing
the event loop from ever actually scanning for more events.
This commit fixes the above by giving deferreds a better notion of
priorities, and by limiting the number of deferreds that can be
added to the _current_ loop iteration's active queues. (Extra
deferreds are put into the active_later state.)
That isn't an all-purpose priority inversion solution, of course: for
that, you may need to mess around with max_dispatch_interval.
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581b5beb
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2012-05-09T10:50:07
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Give event_base_process_active a single exit path
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c46cb9c3
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2012-05-09T10:49:28
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Make event_base_getnpriorities work with old "implicit base" code
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f90e2559
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2012-05-08T17:46:46
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New event_get_priority() function to return an event's priority
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a4079aa8
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2012-04-06T11:05:35
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Replace more deferred_cb names with event_callback
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ae2b84b2
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2012-04-06T04:33:19
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Replace deferred_cbs with event_callback-based implementation.
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fec8bae2
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2012-04-06T03:15:50
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event_base_assert_ok: check value of event_active_count for correctness
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745a63db
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2012-04-06T03:00:40
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Add "active later" event_callbacks to supersede deferred
An event or event callback can now be in an additional state: "active
later". When an event is in this state, it will become active the
next time we run through the event loop. This lets us do what we
wanted to with deferred callbacks: make a type of active thing that
avoids infinite circular regress in a way that starves other events or
exhausts the stack. It improves on deferred callbacks by respecting
priorities, and by having a non-kludgy way to avoid event starvation.
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cba59e53
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2012-04-05T12:38:18
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Refactor the callback part of an event into its own event_callback type
This shouldn't have any visible effect, but it's necessary or
advisible for a few changes and cleanups I would like to make,
including:
* Replacing the deferred queue with a type that works more as if it
were an event.
* Introducing a useful "activate this on the next round through the
event loop" state for events and deferreds.
* Adding an "on until further notice" status for events, to allow a
saner win32-hybrid approach.
* Eventually, making all user callbacks first-class things with
event-like semantics.
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a1630260
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2012-05-01T13:22:56
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Merge branch '21_robust_monotonic'
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2e882a07
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2012-04-30T22:00:05
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Merge remote-tracking branch 'origin/patches-2.0'
Conflicts:
event.c
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2bfda401
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2012-04-30T17:30:48
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If a higher-priority event becomes active, don't continue running events of the current priority.
Bug found by Ralph Castain.
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630f077c
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2012-04-26T11:56:59
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Simple unit tests for monotonic timers
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a2598ec6
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2012-04-23T13:56:00
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Add EVENT_PRECISE_TIMER environment var for selecting precise-but-slow timer
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f5e4eb05
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2012-04-20T13:14:10
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Refactor monotonic timer handling into a new type and set of functions; add a gettimeofday-based ratcheting implementation
Now, event.c can always assume that we have a monotonic timer; this
makes event.c easier to write.
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d992d911
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2012-04-20T11:51:33
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Merge remote-tracking branch 'origin/patches-2.0'
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dfd808cb
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2012-04-19T00:25:12
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If time has jumped so we'd reschedule a periodic event in the past, schedule it for the future instead
Fixes an issue reported on libevent-users in the thread "a dead
looping bug when changing system time backward". Previously, if time
jumped forward 1 hour[*] and we had a one-second periodic timer event,
that event would get invoked 3600 times. That's almost certainly not
what anybody wants.
In a future version of Libevent, we should expose the amount of time
that the callbac kwould have been invoked somehow.
[*] Forward time jumps can happen with nonmonotonic clocks, or with
clocks that jump on suspend/resume. It can also happen from
Libevent's point of view if the user exits from event_base_loop() and
doesn't call it again for a while.
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bec22b41
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2012-04-19T18:15:12
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Refactor event_persist_closure: raise and extract some common logic
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d5e1d5ad
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2012-04-17T15:16:08
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Implement a GetTickCount-based monotonic timer for Windows
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55780a70
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2012-04-17T13:09:49
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On Linux, use CLOCK_MONOTONIC_COARSE by default
You can make it use CLOCK_MONOTONIC again by setting the
EVENT_BASE_FLAG_PRECISE_TIMER flag in the event_config.
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1fbef7d5
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2012-04-17T12:44:39
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Move use_monotonic and friends into event_base
The use_monotonic field used to be a static field set up at library
setup. Unfortunately, this makes it hard to give the user a way to
make speed/accuracy tradeoffs about time. Moving it into event_base
should let the clock implementation become configurable.
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53a07fe2
|
2010-09-17T00:34:13
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Replace pipe-based notification with EVFILT_USER where possible
Sufficiently recent kqueue implementations have an EVFILT_USER filter
that we can use to wake up an event base from another thread. When
it's supported, we now use this mechanism rather than our old
(pipe-based) mechanism. This should save some time and complications
on newer OSX and freebsds.
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cb653a00
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2012-04-09T13:41:45
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Do not track use_monotonic field when is no monotonic clock
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b8fd6f91
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2012-04-09T13:39:11
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|
Use mach_absolute_time() for monotonic clock support on OSX.
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2449e0c5
|
2012-04-03T16:15:49
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Fix some compilation warnings with msvc
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13dad99c
|
2012-04-03T14:53:00
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make event_base_get_running_event build with threads disabled.
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09cbc3dc
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2012-03-26T23:28:21
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Temporarily disable event_queue_reinsert_timeout
Apparently, now that we have tests for it in main/common_timeout, we
can now see that it sometimes breaks referential integrity somehow.
Since I'd like to get 2.1.1-alpha out the door soon, I'm turning it
off for now.
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