[jira] Resolved: (HARMONY-3376) [drlvm][winx64] debug drlvm returns 128 when running from any shell

["Gregory Shimansky (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HARMONY-3376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gregory Shimansky resolved HARMONY-3376.
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    Resolution: Fixed

The problem appears to be in recursive exception handler invocation. When VM shutdowns it frees and zeroes a pointer to vm_methods table which contains all compiled java methods information. This table is used by exception handler to determine whether an exception has occurred in java code or in any other code.

So after VM zeroed a pointer to vm_methods, when exception handler tried to determine where an exception has occurred, it got another exception because it used an incorrect pointer. This lead to an infinite recursion of exception handler and eventual process termination with an error code 128.

The reason why exception handler was called after VM shutdown seems to be the MSVC runtime. Somewhere after main function of the java.exe launcher has finished, MSVC runtime generated an exception with code 0x406D1388. This exception happens both on windows x86 and x86_64 if the program is compiled with MSVC 2005 and linked with msvcr80.dll.

The fix to this problem is that if the pointer to vm_method table is zero, no lookup should be performed in it. If this pointer is zero, then it means that exception didn't occur in java because java cannot be executed in such condition. Patch to fix this applied at 518625. Please check that it fixes the problem.

> [drlvm][winx64] debug drlvm returns 128 when running from any shell
> -------------------------------------------------------------------
>
>                 Key: HARMONY-3376
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3376
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>         Environment: windows/em64t
>            Reporter: Pavel Pervov
>         Assigned To: Gregory Shimansky
>            Priority: Minor
>
> When DRLVM is being run from any shell (cygwin bash or cmd) the process return code is 128. 'main' function exits with code 0. It looks like some problem in runtime shutdown.

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