Queries whether any threads have ever contended to acquire this synchronizer; that is, if an acquire method has ever blocked.
<p>In this implementation, this operation returns in constant time.
@return {@code true} if there has ever been contention
See Implementation
Queries whether any threads have ever contended to acquire this synchronizer; that is, if an acquire method has ever blocked.
<p>In this implementation, this operation returns in constant time.
@return {@code true} if there has ever been contention