On Sat, Mar 8, 2014 at 2:33 PM, Furkan KAMACI <furkankam...@gmail.com> wrote: > ConcurrentLRUCache<K,V> class has that lines: > > ... > long oldestEntry = this.oldestEntry; > isCleaning = true; > this.oldestEntry = oldestEntry; // volatile write to make isCleaning > visible > ... > > What does that assignment and so makes isCleaning visible?
It's called piggy-backing... All changes before a volatile write will be visible to another thread after reading that volatile variable. -Yonik http://heliosearch.org - native off-heap filters and fieldcache for solr
