git: openjdk/jdk-sandbox: parttimenerd_jfr_cpu_time_sampler4: Refactor head/tail retrieval

[duke]

Changeset: 88e6cb30
Branch: parttimenerd_jfr_cpu_time_sampler4
Author:    Jaroslav Bachorik <j.bachorik at gmail.com>
Date:      2024-08-23 15:51:04 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/88e6cb30a4e5790ce8f3a4e12121f58307230803

Refactor head/tail retrieval

! src/hotspot/share/jfr/periodic/sampling/jfrCPUTimeThreadSampler.cpp