8165489: Missing G1 barrier in Unsafe_GetObjectVolatile Summary: Add missing barrier, sharing code with Unsafe_GetObject. Reviewed-by: kbarrett, mgerdin, pliden

Merge

8136766: Enable ThreadStackSize range test Summary: Re-enabled max range check for StackSize runtime options Reviewed-by: dcubed

8157952: Parallelize Memory Pretouch Summary: Use multiple threads to pretouch memory using -XX:+AlwaysPreTouch to use more memory bandwidth Reviewed-by: jmasa, sangheki

8165808: Add release barriers when allocating objects with concurrent collection Summary: Add release_set_klass, use in slow-path allocators. Reviewed-by: jmasa, dholmes

8159422: Very high Concurrent Mark mark stack contention Summary: Decrease contention on mark stack by splitting locks, and minimizing the amount of time these locks are held. Improve mark stack management. Reviewed-by: kbarrett, mgerdin, eosterlund

8165017: Additional test coverage of the JDWP CLASSLOADER and MODULE commands Summary: A new JDWP test Reviewed-by: sspitsyn

8027920: SA: Add default methods to InstanceKlass Summary: Add default methods to InstanceKlass to enable SA to inspect default methods Reviewed-by: dsamersoff, iklam Contributed-by: jini.george@oracle.com

Added tag jdk-9+138 for changeset b4b4c1119f39

8166965: Some small java build tools are still running with big JVM configuration Reviewed-by: ihse

8166948: Exploded image too slow to be usable Reviewed-by: alanb, mchung, ihse

8160630: libjimage.so and others should link statically to libgcc Reviewed-by: ihse, tbell

Added tag jdk-9+138 for changeset de6f69208f82

Added tag jdk-9+138 for changeset d273dfe9a126

Merge