LongCounterMetric.java

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//   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.doris.metric;

import java.util.concurrent.atomic.LongAdder;

public class LongCounterMetric extends CounterMetric<Long> {

    public LongCounterMetric(String name, MetricUnit unit, String description) {
        super(name, unit, description);
    }

    // LongAdder is used for purposes such as collecting statistics, not for fine-grained synchronization control.
    // Under high contention, expected throughput of LongAdder is significantly higher than AtomicLong
    private LongAdder value = new LongAdder();

    @Override
    public void increase(Long delta) {
        value.add(delta);
    }

    @Override
    public Long getValue() {
        return value.longValue();
    }

    public void reset() {
        value.reset();
    }

    public void update(Long delta) {
        value.reset();
        value.add(delta);
    }
}