RFR: 8230878: ZGC: Use thread_local instead of __thread

[Per Liden]

On 9/12/19 2:53 AM, Kim Barrett wrote:
>> On Sep 11, 2019, at 6:59 PM, Kim Barrett <kim.barrett at oracle.com> wrote:
>>
>>> On Sep 11, 2019, at 4:48 PM, Per Liden <per.liden at oracle.com> wrote:
>>>
>>> We're currently using the gcc specific __thread syntax for thread local data. We should make those declarations compiler agnostic.
>>>
>>> This patch depends on the proposal to rename THREAD_LOCAL_DECL to thread_local (JDK-8230877), which is currently out for review on hotspot-dev.
>>>
>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8230878
>>> Webrev: http://cr.openjdk.java.net/~pliden/8230878/webrev.0
>>>
>>> /Per
>>
>> Looks good.
> 
> Retracting that, because of 8230877 discussion.

Updated webrev, using THREAD_LOCAL, as discussed in the JDK-8230877 
review thread.

http://cr.openjdk.java.net/~pliden/8230878/webrev.1

/Per