On 01/06/2016 16:35, Jim Laskey (Oracle) wrote:
We tried using regex in jlink for various filters and found that it made jlink
> 10x slower. Granted jlink is time critical and jimage is not. I made the
assumption that filter expressions would be very basic, most of the time, and
tried to be consistent with filters for both tools. I could easily change it to
use regex if not a basic pattern.
Note we also chose not to use java.lang.regex in Nashorn for similar reasons
(plus the fact it didn’t meet JS spec. .) Might be worth revisiting regex
performance.
I understand that this was an issue in Nashorn. I wasn't aware of this
being a problem with jlink as the regex usage should be very simple with
the order-resources or exclude-resources plugins. Note that jar and jmod
both have options that are patterns so we are a bit inconsistent on this
point.
-Alan.
