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From "Aleksey Ignatenko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-3124) [classlib][launcher] Generation of minidumps files on crash
Date Mon, 19 Feb 2007 11:05:06 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-3124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12474129

Aleksey Ignatenko commented on HARMONY-3124:

Notes from HY discussion:
try to move this functionality  to drlvm (generate minidump files additionally to stack trace
on the basis of the drlvm exception handler) to be independent from classlib
(as classlib affects not only drlvm). 
+ this is to be tested on different OS (e.g. win2000) and on OS w/o dbghelp.dll or with older

> [classlib][launcher] Generation of minidumps files on crash
> -----------------------------------------------------------
>                 Key: HARMONY-3124
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3124
>             Project: Harmony
>          Issue Type: New Feature
>          Components: Classlib
>         Environment: Windows
>            Reporter: Aleksey Ignatenko
>         Attachments: hydump_29978977.dmp, minidump_feature_v1.patch
> Investigating intermittent crashes on EUT I faced with the problem of crash reproduction.
It is very difficult to detect some rare crashes or tied to specific hardware. I have introduced
into launcher minidumps generating code based on dbghelp library, minidump files are generated
when some crash handled by launcher's exception handler happent. Minidump file contains complete
snapshot of program state on the moment of crash (stacks, variables).
> I hope it will significantly improve intermittient crashes fixing process.
> I have not tested it yet with older versions of Windows or over other jvms, but the patch
is done that dbghelp library is loaded dinamically and in case of problems with loading minidump
file is generated.
> Minidump is save into the current directory where your application was launched and there
is written additional info, eg:
> ...
> Module_base_address=01320000
> Offset_in_DLL=000b7aea
> Dumpfile=C:\work\Harmony\working_vm\build\win_ia32_msvc_debug\deploy\jdk\jre\bin\hydump_27422371.dmp
> Investigating EUT crashes I noticed that jrockit also generates dump files in windows.

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