RFR(S): 8074354: tests that intentionally crash the VM can timeout creating a core file

Thomas Stüfe thomas.stuefe at gmail.com
Wed Mar 11 10:47:31 UTC 2015

Hi Yumin,

There is also test/runtime/ErrorHandling/SecondaryErrorTest.java - could
you please add "-XX:-CreateCoredumpOnCrash" ? Thank you!

Beyond that, as I wrote in the bug report comments:

"This is also a problem on Windows - MiniDumpWriteDump() may hang
infinitly. And on Windows this is worse than under UNIX because we create
the Dump before writing the hs-err file, so if the Dump hangs, we get no
error log. I would like to revert the order: create the minidump after
writing the error log, the same way Unix does it. We did this in our JVM
(SAP) because for us, error logs are more useful than minidumps. "

So, I would like to see os::abort on Windows call MiniDumpWriteDump(), and
thus the mini dump writing moved after the error log writing. This would
also make the code way cleaner because the control flow would be the same
on all platforms.

I understand that this may be out of scope for your change, but I would
like to know what others think about this.

Kind regards, Thomas

On Wed, Mar 11, 2015 at 8:02 AM, Yumin Qi <yumin.qi at oracle.com> wrote:

> Please review:
> bug: https://bugs.openjdk.java.net/browse/JDK-8074354
> webrev: http://cr.openjdk.java.net/~minqi/8074354/webrev01/
> Summary: Tests timed out when VM crashes and dumping core file which in
> the test case is not needed. To make core not created, the fix changed
> CreateMinidumpOnCrash to CreateCoredumpOnCrash, the former is only used on
> Windows and the latter for all platforms. When VM crashes on non Windows,
> core file generated as default if OS sets core dump allowed. Default value
> of CreateCoredumpOnCrash set to 'true' to keep same behavior on non Windows
> platforms, but changed for Windows --- original is false, not create
> minidump on Windows. With CreateCoredumpOnCrash turned off, no core file
> will be generated. CreateMinidumpOnCrash still can be used on commandline
> but only as alias for the new flag.
> Tests: JPRT, manual tests setting CreateMinidumpOnCrash on commandline to
> verify flag change as alias.
> Thanks
> Yumin

More information about the hotspot-runtime-dev mailing list