[jira] Updated: (HARMONY-3816) [drlvm][jit] BBP fails to provide safe-points on back branches from exception handlers

["Evgueni Brevnov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-3816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Evgueni Brevnov updated HARMONY-3816:
-------------------------------------

    Attachment: SuspendOnBackBranchTest3.java

Attaching test case which shows the problem. Note that -Xem:opt should be specified as the commind line option.

> [drlvm][jit] BBP fails to provide safe-points on back branches from exception handlers
> --------------------------------------------------------------------------------------
>
>                 Key: HARMONY-3816
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3816
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Evgueni Brevnov
>            Priority: Minor
>         Attachments: bbp_on_dispatch_nodes.txt, SuspendOnBackBranchTest3.java
>
>
> BBP makes wrong assumption regarding thread interruptability in dispatch nodes. Currently implementation of exception dispatching mechanism doesn't provide safe points on exception throwning thus BBP should forcibly insert safe-points on back branches from catch handlers. The patch is attached.

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