RFR(S) 8218751 Do not store original classfiles inside the CDS archive

[serguei.spitsyn at oracle.com]

Hi Ioi,

It looks good to me.

Thanks,
Serguei


On 2/11/19 9:23 AM, Ioi Lam wrote:
> http://cr.openjdk.java.net/~iklam/jdk13/8218751-dont-store-classfiles-in-cds.v01/ 
>
> https://bugs.openjdk.java.net/browse/JDK-8218751
>
> For JVMTI ClassFileLoadHook support, the CDS archive currently stores
> the original classfile data of all archived classes.
>
> However, this consists of over 30% of the archive size. Because all
> original classfile data are already available in other files (such as the
> JDK lib/modules file, or JAR files in the classpath), we can simply read
> from these locations when needed by JVMTI.
>
> For the default CDS archive (included as part of the JDK distribution),
> the size is reduced from about 18.5MB to 12.1MB on Linux/x64.
>
> Thanks
>
> - Ioi
>