[jira] Updated: (HARMONY-5663) [drlvm][port][signals] Crash handler should not change a behavior of signals not requested by the VM

["Ilya Berezhniuk (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-5663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ilya Berezhniuk updated HARMONY-5663:
-------------------------------------

    Attachment: sig_pass_02.patch

The patch to fix the problem.


> [drlvm][port][signals] Crash handler should not change a behavior of signals not requested by the VM
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5663
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5663
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Ilya Berezhniuk
>            Priority: Minor
>         Attachments: sig_pass_02.patch
>
>
> When VM signal handler is not registered in crash handler for particular signal/exception, crash handler must pass this signal/exception to OS for default procesing.
> On Windows it can be done by checking if signal is registered right from VEH, and returning EXCEPTION_CONTINUE_SEARCH. So all supported exceptions still can be caught.
> On Linux crash handler must not register signal handlers for the signals not requested by the VM, because default processing needs unregistering the handler and rethrowing the signal, which is not easy someties.

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