hg: jdk/sandbox: 8199868: Support JNI critical functions in object pinning API

[chris.hegarty at oracle.com]

Changeset: 2cd8bbccbd2d
Author:    zgu
Date:      2018-07-31 13:12 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/2cd8bbccbd2d

8199868: Support JNI critical functions in object pinning API
Summary: Pin/unpin incoming array arguments of critical native JNI call
Reviewed-by: shade, adinn

! src/hotspot/cpu/x86/sharedRuntime_x86_64.cpp
! src/hotspot/share/runtime/sharedRuntime.cpp
! src/hotspot/share/runtime/sharedRuntime.hpp
+ test/hotspot/jtreg/gc/epsilon/CriticalNativeArgs.java
+ test/hotspot/jtreg/gc/epsilon/CriticalNativeStress.java
+ test/hotspot/jtreg/gc/epsilon/libCriticalNative.c