Integrated: 8300119: CgroupMetrics.getTotalMemorySize0() can report invalid results on 32 bit systems

[Jonathan Dowland]

On Wed, 18 Jan 2023 13:20:06 GMT, Jonathan Dowland <jdowland at openjdk.org> wrote:

> This is a fix for https://bugs.openjdk.org/browse/JDK-8300119 (CgroupMetrics.getTotalMemorySize0() can report invalid results on 32 bit systems). Thanks to @jerboaa Severin Gehwolf for figuring out the solution.
> 
> The problem is demonstrated by test/hotspot/jtreg/containers/docker/TestMemoryAwareness.java which fails on 32-bit x86 in HEAD, and passes after applying this patch.
> 
> I tested this on an amd64 system with a cross-compiled JDK. I needed to override the default docker container for the test, to get one with a 32-bit userland. (the precise choice was also dictated by ABI matching my main development machine):
> 
> 
> $JT_HOME/bin/jtreg -v -Djdk.test.docker.retain.image=true -Djdk.test.docker.image.name=i386/debian -Djdk.test.docker.image.version=testing-slim -jdk:$JAVA_HOME test/hotspot/jtreg/containers/docker/TestMemoryAwareness.java

This pull request has now been integrated.

Changeset: dea58efb
Author:    Jonathan Dowland <jdowland at openjdk.org>
Committer: Severin Gehwolf <sgehwolf at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/dea58efb6280bb1d94daf208ac909aa013439397
Stats:     3 lines in 1 file changed: 2 ins; 0 del; 1 mod

8300119: CgroupMetrics.getTotalMemorySize0() can report invalid results on 32 bit systems

Reviewed-by: sgehwolf

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PR: https://git.openjdk.org/jdk/pull/12069