org.apache.activemq.artemis.shaded.org.jgroups.blocks.atomic.Counter Maven / Gradle / Ivy
package org.apache.activemq.artemis.shaded.org.jgroups.blocks.atomic;
/**
* @author Bela Ban
* @since 3.0.0
*/
public interface Counter {
public String getName();
/**
* Gets the current value of the counter
* @return The current value
*/
public long get();
/**
* Sets the counter to a new value
* @param new_value The new value
*/
public void set(long new_value);
/**
* Atomically updates the counter using a CAS operation
*
* @param expect The expected value of the counter
* @param update The new value of the counter
* @return True if the counter could be updated, false otherwise
*/
public boolean compareAndSet(long expect, long update);
/**
* Atomically increments the counter and returns the new value
* @return The new value
*/
public long incrementAndGet();
/**
* Atomically decrements the counter and returns the new value
* @return The new value
*/
public long decrementAndGet();
/**
* Atomically adds the given value to the current value.
*
* @param delta the value to add
* @return the updated value
*/
public long addAndGet(long delta);
}