tree d412524f780704b97b5c31c2a26fc36f01b60111
parent ded58facb721c8188b405041f3e6eb445f506762
author jonlee@apple.com <jonlee@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1460768579 +0000
committer jonlee@apple.com <jonlee@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1460768579 +0000

Animometer test could report a NaN
https://bugs.webkit.org/show_bug.cgi?id=156646

Reviewed by Darin Adler.
Provisionally reviewed by Said Abou-Hallawa.

* Animometer/tests/resources/main.js:
(didFinishInterval): The ramp controller has a first phase where it ramps up the complexity and
reacts based on how well the system handles the load. The assumption was that it would handle at least
1 particle easily. That is not always the case. As a result, an interpolation calculation could
end up setting an upper bound of NaN.

This occurs because we never get out of the first tier, so this._lastTierComplexity is undefined.
Now that we guarantee a minimum complexity of 1, modify the conditional to check for this._lastTierComplexity
before interpolating the upper bound of the first ramp. In the case where the system struggles with
1 particle, set it to currentComplexity.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@199616 268f45cc-cd09-0410-ab3c-d52691b4dbfc