hg: jdk/jdk: 8214271: Fast primitive to wake many threads

[robbin.ehn at oracle.com]

Changeset: 47bc06170313
Author:    rehn
Date:      2019-01-11 10:58 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/47bc06170313

8214271: Fast primitive to wake many threads
Reviewed-by: dholmes, dcubed

+ src/hotspot/os/linux/waitBarrier_linux.cpp
+ src/hotspot/os/linux/waitBarrier_linux.hpp
+ src/hotspot/share/utilities/waitBarrier.hpp
+ src/hotspot/share/utilities/waitBarrier_generic.cpp
+ src/hotspot/share/utilities/waitBarrier_generic.hpp
+ test/hotspot/gtest/utilities/test_waitBarrier.cpp