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

[David M. Lloyd]

Or perhaps a builder...

On 12/08/2015 08:33 AM, Roger Riggs wrote:
> Hi Chris,
>
> Supporting the use case in Thread is a good addition.
>
> Adding an argument to the most flexible constructor of Thread bulks up
> an already heavy weight constructor.  Look at the cases being replaced,
> none of them use all of the arguments.  The stackSize, for example, is
> rarely
> used and is nearly useless due to its implementation dependencies.
>
> Would you consider using a static Factory method (aptly named) instead
> of a constructor?
>
> Roger
>
>
> On 12/08/2015 09:15 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
>

-- 
- DML