[crac] Integrated: 8371337: [CRaC] Fastdebug build fails when calling OperatingSystemMxBean.getProcessCpuLoad after restore

[Radim Vansa]

On Wed, 5 Nov 2025 12:21:23 GMT, Radim Vansa <rvansa at openjdk.org> wrote:

> A JVM that executed OperatingSystemImpl.getProcessCpuLoad()  before checkpoint can fail with assertion failure after restore with:
> 
> java: /home/rvansa/work/zulu/src/jdk.management/linux/native/libmanagement_ext/UnixOperatingSystem.c:291: get_cpuload_internal: Assertion `pticks->usedKernel >= tmp.usedKernel' failed.
> 
> This is an assertion failure, therefore failing only in debug builds, and providing probably a non-sense value in release builds. We should remove the assertion and return a negative value (documented as value for ‘unavailable’) if this is detected.

This pull request has now been integrated.

Changeset: e288b416
Author:    Radim Vansa <rvansa at openjdk.org>
URL:       https://git.openjdk.org/crac/commit/e288b416f0ffa0c1031188fd3a34e582dd00cc19
Stats:     65 lines in 2 files changed: 62 ins; 3 del; 0 mod

8371337: [CRaC] Fastdebug build fails when calling OperatingSystemMxBean.getProcessCpuLoad after restore

Reviewed-by: tpushkin

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PR: https://git.openjdk.org/crac/pull/274