hg: panama/dev: 8226250: Calling callback from different native threads causes a VM crash

[maurizio.cimadamore at oracle.com]

Changeset: 84f306cbe89b
Author:    mcimadamore
Date:      2019-06-18 11:56 +0100
URL:       http://hg.openjdk.java.net/panama/dev/rev/84f306cbe89b

8226250: Calling callback from different native threads causes a VM crash

! src/hotspot/cpu/aarch64/directUpcallHandler_aarch64.cpp
! src/hotspot/cpu/aarch64/universalUpcallHandler_aarch64.cpp
! src/hotspot/cpu/x86/directUpcallHandler_x86.cpp
! src/hotspot/cpu/x86/universalUpcallHandler_x86.cpp
+ test/jdk/java/foreign/pthread/Threads.java