RFR: JDK-8156995 - jimage: extract specified contents

[Jim Laskey (Oracle)]

I’ll change both jlink and jimage for consistency and optimize jlink if it becomes an issue.  Will file separate bugs.

— Jim
 

> On Jun 1, 2016, at 12:45 PM, Alan Bateman <Alan.Bateman at oracle.com> wrote:
> 
> 
> 
> 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.