[jira] Commented: (HARMONY-1942) [drlvm] Back-branch polling TLS offset is incorrect. Stability and performance fix

["Mikhail Fursov (JIRA)" <ji...@apache.org>]

    [ http://issues.apache.org/jira/browse/HARMONY-1942?page=comments#action_12444891 ] 
            
Mikhail Fursov commented on HARMONY-1942:
-----------------------------------------

Verified.
Thank you, Weldon.

> [drlvm] Back-branch polling TLS offset is incorrect. Stability and performance fix
> ----------------------------------------------------------------------------------
>
>                 Key: HARMONY-1942
>                 URL: http://issues.apache.org/jira/browse/HARMONY-1942
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Mikhail Fursov
>         Assigned To: weldon washburn
>            Priority: Critical
>         Attachments: hy.diff, hy_2.diff
>
>
> The suspend flag's TLS offset used by JIT agorithms was incorrect after the latest merge of TM.
> As the result every loop iteration BBP algorithm uses slow path.
> This patch 
> 1) Fixes the problem 
> 2) Adds new functionality to TM: the UDATA VMCALL hythread_tls_get_offset(hythread_tls_key_t key)  method.
> 3) Removes jit_private data field from HyThread 
> 3) Fix JIT to always use allocation algorithm for TLS keys, not hardcoded values.

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