RFR (S) 8215521: add microbenchmark to measure AccessController.getContext

[Alan Bateman]

On 03/10/2019 22:27, eric.caspole at oracle.com wrote:
> :
>
> http://cr.openjdk.java.net/~ecaspole/JDK-8215521/01/webrev/
>
The cast is bit ugly. In other cases, we create PrivilegedAction like 
the following to make it easier to read:

PrivilegedAction<AccessControlContext> pa = () -> 
AccessController.getContext();
return AccessController.doPrivileged(pa);

-Alan