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9c8db0f8
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2010-09-23T22:45:55
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Fix all warnings in the main codebase flagged by -Wsigned-compare
Remember, the code
int is_less_than(int a, unsigned b) {
return a < b;
}
is buggy, since the C integer promotion rules basically turn it into
int is_less_than(int a, unsigned b) {
return ((unsigned)a) < b;
}
and we really want something closer to
int is_less_than(int a, unsigned b) {
return a < 0 || ((unsigned)a) < b;
}
.
Suggested by an example from Ralph Castain
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ec347b92
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2010-07-07T16:45:03
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Move event-config.h to include/event2
This change means that all required include files are in event2, and
all files not in event2/* are optional.
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6f20492f
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2010-03-26T14:20:10
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Fix a free(NULL) in minheap-internal.h
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a5276180
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2010-03-26T13:56:01
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Fix minheap code to use replacement malloc functions
minheap-internal.h still had an extra realloc and an extra free that
needed to be replaced with mm_realloc and mm_free().
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7204b916
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2010-03-26T13:46:29
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Remove a needless min_heap_shift_up_() call
Previously, every call to min_heap_shift_down_() would invoke
min_heap_shift_up_() at the end. This used to be necessary in the
first version of the minheap code, since min_heap_erase() would call
min_heap_shift_down_() unconditionally. But when patch 8b7a3b36763
from Marko Kreen fixed min_heap_erase() to be more sensible, we left
the weird behavior of min_heap_shift_down_() in place.
Fortunately, "cui" noticed this and reported it on Niels's blog.
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2c2618d8
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2010-03-05T13:00:15
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more whitespace normalization
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17efc1cd
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2010-03-04T01:25:51
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Update all our copyright notices to say "2010"
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4faeaea9
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2010-02-19T03:39:50
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Clean up formatting: function/keyword spacing consistency.
- Keywords always have a space before a paren. Functions never do.
- No more than 3 blank lines in a row.
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e5bbd40a
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2010-02-18T17:41:15
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Clean up formatting: use tabs, not 8-spaces, to indent.
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693c24ef
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2009-11-09T17:16:30
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Implement queued timeouts for case where many timeouts are the same.
Libevent's current timeout code is relatively optimized for the
randomly scattered timeout case, where events are added with their
timeouts in no particular order. We add and remove timeouts with
O(lg n) behavior.
Frequently, however, an application will want to have many timeouts
of the same value. For example, we might have 1000 bufferevents,
each with a 2 second timeout on reading or writing. If we knew this
were always the case, we could just put timeouts in a queue and get
O(1) add and remove behavior. Of course, a queue would give O(n)
performance for a scattered timeout pattern, so we don't want to
just switch the implementation.
This patch gives the user the ability to explicitly tag certain
timeout values as being "very common". These timeout values have a
cookie encoded in the high bits of their tv_usec field to indicate
which queue they belong on. The queues themselves are each
triggered by an entry in the minheap.
See the regress_main.c code for an example use.
svn:r1517
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ba8a1771
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2009-10-02T03:03:58
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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
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ebf29455
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2009-04-30T23:49:15
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Compilation fixes for vc++ 2008 express. Not the end of them.
svn:r1260
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8b7a3b36
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2009-04-23T00:01:24
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Fix min_heap_erase when we remove an element from the middle of the heap.
Previously, we could lose the heap property when we removed an item
whose parent was greater than the last element in the heap. We would
replace the removed item with the last element, and consider shifting
it down, but we wouldn't consider shifting it up.
Patch from Marko Kreen.
svn:r1226
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b85b710c
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2009-01-27T22:34:36
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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
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169321c9
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2009-01-13T20:26:37
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Rename four internal headers to follow the -internal.h convention.
svn:r1000
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