I've just read javadocs about phaser and now it's reasonobly to ask about whether the barrier implementation is applied in JDK itself (I consider JDK7). As the Phaser JavaDoc stated
Phasers may also be used by tasks executing in a ForkJoinPool
So, I looked up Phaser's usages in the ForkJoinPool but I couldn't find anything. The goal is to find any real example using Phaser.