hg: jdk/sandbox: 8203635: JFR sampler thread does not record stack info

[chris.hegarty at oracle.com]

Changeset: 911b913022ef
Author:    zgu
Date:      2018-05-22 14:49 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/911b913022ef

8203635: JFR sampler thread does not record stack info
Summary: Added call to record_stack_base_and_size() from sampler thread
Reviewed-by: shade, coleenp, stuefe

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