hg: jdk-updates/jdk12u: 3 new changesets

[shade at redhat.com]

Changeset: 7bbe64f82b75
Author:    shade
Date:      2019-01-30 19:45 +0100
URL:       http://hg.openjdk.java.net/jdk-updates/jdk12u/rev/7bbe64f82b75

8217994: os::print_hex_dump should be more resilient against unreadable memory
Reviewed-by: zgu, stuefe, lucy

! src/hotspot/share/runtime/os.cpp
! test/hotspot/gtest/runtime/test_os.cpp

Changeset: e8d48594605b
Author:    shade
Date:      2019-01-18 17:05 +0100
URL:       http://hg.openjdk.java.net/jdk-updates/jdk12u/rev/e8d48594605b

8217315: Proper units should print more significant digits
Reviewed-by: stuefe, tschatzl

! src/hotspot/share/utilities/globalDefinitions.hpp
! test/hotspot/gtest/utilities/test_globalDefinitions.cpp

Changeset: a26943f42754
Author:    mgronlun
Date:      2018-12-21 16:56 +0100
URL:       http://hg.openjdk.java.net/jdk-updates/jdk12u/rev/a26943f42754

8215727: Restore JFR thread sampler loop to old / previous behavior
Reviewed-by: egahlin, mgronlun
Contributed-by: milan.mimica at gmail.com

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