hg: jdk/sandbox: 8185005: Improve performance of ThreadMXBean.getThreadInfo(long ids[], int maxDepth)

[chris.hegarty at oracle.com]

Changeset: f4abe950c3b0
Author:    dtitov
Date:      2019-09-25 11:10 -0700
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/f4abe950c3b0

8185005: Improve performance of ThreadMXBean.getThreadInfo(long ids[], int maxDepth)
Reviewed-by: sspitsyn, dholmes, dcubed, rehn

! src/hotspot/share/runtime/mutexLocker.cpp
! src/hotspot/share/runtime/mutexLocker.hpp
! src/hotspot/share/runtime/threadSMR.cpp
+ src/hotspot/share/services/threadIdTable.cpp
+ src/hotspot/share/services/threadIdTable.hpp