hg: jdk/jdk: 8225690: Multiple AttachListener threads can be created

[yasuenag at gmail.com]

Changeset: 70fab3a8ff02
Author:    ysuenaga
Date:      2019-07-16 07:29 +0900
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/70fab3a8ff02

8225690: Multiple AttachListener threads can be created
Reviewed-by: sspitsyn, cjplummer

! src/hotspot/os/aix/attachListener_aix.cpp
! src/hotspot/os/bsd/attachListener_bsd.cpp
! src/hotspot/os/linux/attachListener_linux.cpp
! src/hotspot/os/solaris/attachListener_solaris.cpp
! src/hotspot/os/windows/attachListener_windows.cpp
! src/hotspot/share/runtime/os.cpp
! src/hotspot/share/services/attachListener.cpp
! src/hotspot/share/services/attachListener.hpp
+ test/hotspot/jtreg/serviceability/attach/ConcAttachTest.java
+ test/hotspot/jtreg/serviceability/attach/RemovingUnixDomainSocketTest.java