This is a second attempt at submitting this changelist. The original one was
http://codereview.chromium.org/196053 It turns out, since none of our tests
abstract time correctly, unittests are very sensitive to subtle changes in
timing. This made some of the valgrind tests on Linux fail, and unfortunately,
neither my desktop nor the trybots could reproduce the problem reliably.
As far as I can tell, all the (design) bugs are in the unittests. The browser
is actually fine.
Tweaked the code a little more. Will resubmit and carefully monitor the
buildbots.
Original change description follows:
When converting between units of time or data types of different precision,
we have to be careful to consistently round in the same direction.
Timeout checks usually check if Now() is less or equal to a deadline in order
to determine if a timeout has occurred. This correctly handles the case where
actual sleep times are equal or longer than requested sleep times.
But if we round down when setting the sleep delay, this can result in
unnecessary and expensive looping. Make sure, we always round up when converting
to a format with less precision.
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/257044
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@28801 0039d316-1c4b-4281-b951-d872f2087c98
CrOS-Libchrome-Original-Commit: 6b1753827c4f458b55eae64bfa0f8a699ebcee4c
3 files changed