JDK-8043002 : Improve performance of Nashorn equality operators
- Type: Enhancement
- Component: core-libs
- Sub-Component: jdk.nashorn
- Affected Version: 9
- Priority: P2
- Status: Resolved
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2014-05-13
- Updated: 2015-01-21
- Resolved: 2014-05-14
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| JDK 8 | JDK 9 |
|---|---|
8u40Fixed  |
9 b17Fixed |
Description
Nashorn equality operators check the types of their operands. The JSType.of() function that it uses does a costly distinction between OBJECT and FUNCTION, but that's unnecessary for the equality algorithm. A new "ofNoFunction" method that does not distinguish OBJECT and FUNCTION types is needed. This is one of recently discovered significant performance bottlenecks in Avatar.