hg: jdk/jdk: 8230303: JDB hangs when running monitor command

[ivan.gerasimov at oracle.com]

Changeset: 6eca527d3689
Author:    igerasim
Date:      2019-09-10 09:08 -0700
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/6eca527d3689

8230303: JDB hangs when running monitor command
Reviewed-by: sspitsyn

! src/jdk.jdi/share/classes/com/sun/tools/example/debug/tty/TTY.java
+ test/hotspot/jtreg/vmTestbase/nsk/jdb/monitor/monitor002/monitor002.java
+ test/hotspot/jtreg/vmTestbase/nsk/jdb/monitor/monitor002/monitor002a.java