8184917: System.initPhase1 does not need to pre-load libzip

[Claes Redestad]

Hi Alan,

this looks good to me!

/Claes

On 2017-07-19 15:47, Alan Bateman wrote:
>
> System.initPhase1 (formerly initializeSystemClasses) currently 
> pre-loads the zip library. I'd like to drop this in jdk10/jdk10 so 
> that it is loaded lazily and so reduce the code executed in this phase 
> of startup. One motivation is that the zip code no longer uses native 
> methods in libzip to access zip files, it is only now needed when 
> inflating/deflating or for checksums. Another motivation is that jlink 
> can be used to create runtime images that contain the main application 
> and all modules that is needed (there is no class path or module path 
> with JAR files in these cases and libzip is only needed if the image 
> is created with compression).
>
> The changes are trivial but something for early in a release to shake 
> out any issues (attempts to touch this code in this past ended in 
> tears due to bootstrapping issues, all issues that are in the past now).
>    http://cr.openjdk.java.net/~alanb/8184917/webrev/index.html
>
> -Alan