RFR [9] 8056152 API to create Threads that do not inherit InheritableThreadLocals

[David M. Lloyd]

Great! Now all we need is a way to tell threads to remove all thread 
locals on exit, and the scourge of ITL might be somewhat mitigated. :-)

On 12/08/2015 08:15 AM, Chris Hegarty wrote:
> Many threads created by the platform are short lived and perform some
> simple async operation on behalf of the platform. These threads typically
> use/extend sun.misc.ManagedLocalsThread. This is a convenient internal
> API that can be used to create threads that do not wish to inherit initial
> values from inheritable thread-local variables.
>
> I'd like to propose an additional java.lang.Thread constructor that exposes
> the ability to explicitly "opt out" of inheriting these initial values ( from
> inheritable thread-local variables ). This seems like useful general
> functionality, given the amount of usage in the JDK of the internal API.
>
> This new public API can then be used to replace usages of the internal
> sun.misc.ManagedLocalsThread. As part of this bug I've only retrofitted
> the usage in the sources of the base module. Other modules can be done
> as a follow up.
>
> Webrev:
>    http://cr.openjdk.java.net/~chegar/8056152/00/webrev/
>
> -Chris.
>
> [1] https://bugs.openjdk.java.net/browse/JDK-8056152
>

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- DML