hg: jdk/sandbox: 8234613: JavaThread can escape back to Java from an ongoing handshake

[chris.hegarty at oracle.com]

Changeset: 9170826a3d76
Author:    pchilanomate
Date:      2019-11-26 15:21 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/9170826a3d76

8234613: JavaThread can escape back to Java from an ongoing handshake
Summary: Check again if we have a pending/in-progress handshake operation after executing ~ThreadInVMForHandshake()
Reviewed-by: coleenp, dcubed, dholmes, rehn

! src/hotspot/share/runtime/handshake.cpp