git: openjdk/jdk11u-dev: 8225690: Multiple AttachListener threads can be created

[Martin Doerr]

Changeset: f3098c40
Author:    Martin Doerr <mdoerr at openjdk.org>
Date:      2021-07-22 13:40:10 +0000
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/f3098c409d9c33b99a90febe16d272feefdb04c8

8225690: Multiple AttachListener threads can be created

Reviewed-by: clanger
Backport-of: 2870c9d55efe3c0ba9375425efe538912c47bac1

! 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