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List:       openjdk-serviceability-dev
Subject:    Integrated: 8244679: JVM/TI GetCurrentContendedMonitor/contmon001 failed due to "(IsSameObject#3) un
From:       Robbin Ehn <rehn () openjdk ! java ! net>
Date:       2020-11-16 13:10:03
Message-ID: YT8piblDsrwh9UMxa2iosQc_NIQ_xNBj0HkZCqBcFQE=.90ab581c-97d0-4c68-889b-09f38fb1939b () github ! com
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On Wed, 11 Nov 2020 20:33:15 GMT, Robbin Ehn <rehn@openjdk.org> wrote:

> As the stack trace in the bug shows, we cannot load classes, since we may take a \
> monitor. Resulting in an unexpected result to GetCurrentContendedMonitor().
> Trying to use some decent primitive, e.g. Wicket/Semaphore/.., without being \
> implementation dependent means we must warm up every possible scenario, since it \
> may use a new class. Instead I here just use sleep + volatile for the barriers.
> 
> I cannot reproduce with these changes.
> 
> Chewing through T6 as most issues have been seen there - passed.

This pull request has now been integrated.

Changeset: c5fe2c1f
Author:    Robbin Ehn <rehn@openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/c5fe2c1f
Stats:     36 lines in 2 files changed: 22 ins; 5 del; 9 mod

8244679: JVM/TI GetCurrentContendedMonitor/contmon001 failed due to "(IsSameObject#3) \
unexpected monitor object: 0x000000562336DBA8"

Reviewed-by: pchilanomate, dcubed, dholmes, sspitsyn

-------------

PR: https://git.openjdk.java.net/jdk/pull/1177


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