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274 Commits

Author SHA1 Message Date
Nick Mathewson
ba8a17714e Do not notify the main thread more than needed. 
Basically, we suppress the notification when an event is added or deleted
and:
  - The event has no fd, or there is no change in whether we are
    reading/writing on the event's fd.
  - The event has no timeout, or adding the event did not make the earliest
    timeout become earlier.

This should be a big efficiency win in applications with multiple threads and
lots of timeouts.

svn:r1439
 2009-10-02 03:03:58 +00:00
Nick Mathewson
d5b640fc16 Apply Ka-Hing Cheung's event_base_got_[break|exit] patch, with locking and whitespace fixes. 
svn:r1438
 2009-10-01 15:29:08 +00:00
Nick Mathewson
e3f89fa275 Add a trivial race-fix from Chromium: do not try to re-detect whether we have a monotonic clock every time we make a new event_base. 
svn:r1427
 2009-09-11 18:21:57 +00:00
Nick Mathewson
f8b527e6a1 Fix a dumb bug where we would allocate too little memory in event_get_supported_methods(). 
svn:r1383
 2009-07-28 05:09:06 +00:00
Nick Mathewson
b06b2649b4 Make "deferred callback queue" independent of event_base. 
This way, we can more easily have an IOCP bufferevent implementation
that does not need an event_base at all.  Woot.

svn:r1381
 2009-07-26 01:29:39 +00:00
Nick Mathewson
59e8e959dc Add clarifying "static" to definitions of fns in event.c 
svn:r1372
 2009-07-21 19:20:25 +00:00
Nick Mathewson
1fb2e818a6 Use a uniform strategy when a function is not working: do not expose 
it.

Rather than failing at runtime, it is better to fail at compile or
link time.

svn:r1363
 2009-07-17 21:47:45 +00:00
Nick Mathewson
69601fc2f6 Update event_tv when time jumps backwards, so that we only note each jump once. Fix for 1939984 
svn:r1353
 2009-07-17 18:59:22 +00:00
Nick Mathewson
638116cacd Add a check for event_add failure to evthread_make_base_notifiable() 
svn:r1348
 2009-07-17 18:38:14 +00:00
Nick Mathewson
9fcd84d196 Include disabled methods in event_get_supported_methods() output. 
Previously, events that were disabled using EVENT_NO* were left out of
event_get_supported_methods().  This was wrong, broke unit tests
(under some circumstances) and left the user with no good way to tell
which methods were actually compiled in.

Fixes bug 2821015.

svn:r1344
 2009-07-14 19:19:45 +00:00
Nick Mathewson
043515bc52 Stop using C++ style comments. 
svn:r1343
 2009-07-14 18:50:06 +00:00
Nick Mathewson
6b4b77a265 Make event_del(E) block while E is running in another thread. 
This gives you the property that once you have called event_del(E),
you know that E is no longer running or pending or active at all, and
so it is safe to delete the resource used by E's callback.

svn:r1341
 2009-07-14 16:54:48 +00:00
Nick Mathewson
59cd49363c Do not free the event base lock until we are done removing all the events. Spotted by Joachim Bauch; fixes bug 2795402. 
svn:r1302
 2009-05-22 14:31:07 +00:00
Nick Mathewson
b4886ec80d Trim 22 bytes from struct event on 32 bit platforms, more on 64-bit platforms. 
svn:r1292
 2009-05-15 18:44:44 +00:00
Nick Mathewson
0fd70978c8 Add an event_get_base() function to remove one more reason to include event_struct.h 
svn:r1271
 2009-05-05 01:09:03 +00:00
Nick Mathewson
0e63e72a05 Nothing ever sets event_sigcb or event_gotsig any more: remove them. 
svn:r1270
 2009-05-03 18:56:08 +00:00
Nick Mathewson
ebf294559e Compilation fixes for vc++ 2008 express. Not the end of them. 
svn:r1260
 2009-04-30 23:49:15 +00:00
Nick Mathewson
37bc34662b Catch attempts to event_base_once a persistent event. 
svn:r1250
 2009-04-29 20:48:28 +00:00
Nick Mathewson
9ad45eef75 Patch from Eric Hopper: the test for EVENT_BASE_FLAG_IGNORE_ENV was inverted. 
svn:r1248
 2009-04-28 19:08:36 +00:00
Nick Mathewson
2ebfd3bafd Oops. We never actually defined event_config_set_flag(). 
svn:r1246
 2009-04-28 19:08:17 +00:00
Nick Mathewson
faa756c7c1 Oops. event_config.flags was never initialized. Bugfix on 2.0.1-alpha. Found by Victor Goya. 
svn:r1236
 2009-04-23 21:34:37 +00:00
Nick Mathewson
253151c54c Detect and reject n_priorities less than 1. 
svn:r1222
 2009-04-22 20:28:30 +00:00
Nick Mathewson
11ff74cf64 Add a flag to disable checking the EVENT_* environment variables. 
svn:r1220
 2009-04-22 19:41:23 +00:00
Nick Mathewson
d047b323bd Increment version to 2.0.1-alpha, and add a numeric version facility 
svn:r1193
 2009-04-17 17:22:32 +00:00
Nick Mathewson
7fa8451d7e Add a configure flag to hardcode all of our mm functions. 
svn:r1186
 2009-04-17 06:56:57 +00:00
Nick Mathewson
fe95df15d3 Fix typo in mm_free 
svn:r1173
 2009-04-13 18:32:24 +00:00
Nick Mathewson
8161662007 A couple of tweaks for deferred callbacks. 
svn:r1151
 2009-04-10 14:58:15 +00:00
Nick Mathewson
4868f4d217 Initial support for a lightweight 'deferred callbacks'. 
A 'deferred callback' is just a function that we've queued in the
event base.  This ability is needed for some mt stuff, and for complex
callback chains.  For internal use only.

svn:r1150
 2009-04-10 14:22:33 +00:00
Nick Mathewson
e3d82497c9 Don't allow internal events to starve lower-priority events. 
This is exceptionally important with multithreaded stuff, where we use
an event to notify the base that other events have been made active.
If the activated events have a prioirty number greater than that of the
notification event, it will starve them, and that's no good.

svn:r1149
 2009-04-10 14:21:53 +00:00
Nick Mathewson
f98385a407 add a missing "static" to timeout_process. 
svn:r1145
 2009-04-08 16:57:38 +00:00
Nick Mathewson
ec35eb5520 Make threading functions global, like the mm_ functions. Use the libevent_pthread.la library in regress_pthread. 
svn:r1121
 2009-02-12 22:19:54 +00:00
Nick Mathewson
b85b710cf5 Update copyright statements to reflect the facts that: 
a) this is 2009
b) niels and nick have been comaintainers for a while
c) saying "all rights reserved" when you then go on to explicitly
   disclaim some rights is sheer cargo-cultism.

svn:r1065
 2009-01-27 22:34:36 +00:00
Nick Mathewson
8889a77039 Replace all use of config.h with event-config.h. 
svn:r1064
 2009-01-27 22:30:46 +00:00
Nick Mathewson
9993137cbb Remove all trailing whitespace in all the source files. 
svn:r1063
 2009-01-27 21:10:31 +00:00
Niels Provos
1c927b7d2f fix memory leak whens etting up priorities; reported by Alexander Drozdov 
svn:r1061
 2009-01-27 16:29:48 +00:00
Nick Mathewson
f20902a290 Remove evperiodic_assign and its related parts: its functionality is subsumed by EV_PERSIST timeouts. 
svn:r1040
 2009-01-22 17:56:15 +00:00
Nick Mathewson
5e6f6dcd1b Use EV_PERSIST on notify event for efficiency and simplicity. 
svn:r1039
 2009-01-22 17:48:55 +00:00
Niels Provos
56ea4687a5 Change the semantics of timeouts in conjunction with EV_PERSIST; timeouts in that case will now repeat until deleted. 
svn:r1032
 2009-01-22 02:33:38 +00:00
Niels Provos
ed7e0e77ed bug fix and potentital race condition from Alexander Drozdov 
svn:r1025
 2009-01-19 23:40:11 +00:00
Nick Mathewson
a5901991c7 Use eventfd for main-thread notification where available (i.e., linux). 
svn:r1023
 2009-01-19 20:37:24 +00:00
Nick Mathewson
c3e9fcf672 Change the semantics of notify so we can implement it with eventfd or (given a different backend for win32) a windows Event. 
svn:r1022
 2009-01-19 20:22:47 +00:00
Nick Mathewson
34d2fd0634 Debug and enable pipe notification 
svn:r1021
 2009-01-19 19:46:03 +00:00
Nick Mathewson
ec4cfa33c9 Make event_break threadsafe; make notify-thread mechanism a little more generic; let it use pipes where they work. 
svn:r1019
 2009-01-19 01:34:14 +00:00
Nick Mathewson
6bb2f84216 Add initializer functions for evmap types. 
svn:r1005
 2009-01-14 18:38:03 +00:00
Nick Mathewson
169321c9e6 Rename four internal headers to follow the -internal.h convention. 
svn:r1000
 2009-01-13 20:26:37 +00:00
Nick Mathewson
55bcd7d2f0 On win32, use a hashtable to map sockets to events rather than using an array. 
svn:r988
 2009-01-09 13:42:21 +00:00
Niels Provos
d776f8462b deprecate the usage of signal_{add,del,set} and name it evsignal_{add,del,set} instead; move the old definitions to compat 
svn:r973
 2008-12-23 22:23:37 +00:00
Niels Provos
02b2b4d1be Restructure the event backends so that they do not need to keep track of events themselves, as a side effect multiple events can use the same fd or signal. 
svn:r972
 2008-12-23 16:37:01 +00:00
Niels Provos
77867244a9 memory leak: forgot to free the configuration object 
svn:r961
 2008-12-19 21:02:36 +00:00
Niels Provos
808f00e1a1 constify structs; from Andrei Nigmatulin 
svn:r959
 2008-12-13 06:11:12 +00:00