/*
 * Copyright 2014 Timothy Brooks
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package net.uncontended.precipice.metrics;

import net.uncontended.precipice.concurrent.LongAdder;

public class MetricCounter {

    public static final MetricCounter NO_OP_COUNTER = new MetricCounter() {
        public void incrementMetric(Metric metric) {
        }

        public long getMetricCount(Metric metric) {
            return 0L;
        }
    };

    private final LongAdder[] metrics;

    public MetricCounter() {
        Metric[] metricValues = Metric.values();

        metrics = new LongAdder[metricValues.length];
        for (Metric metric : metricValues) {
            metrics[metric.ordinal()] = new LongAdder();
        }
    }

    public void incrementMetric(Metric metric) {
        metrics[metric.ordinal()].increment();
    }

    public long getMetricCount(Metric metric) {
        return metrics[metric.ordinal()].longValue();
    }
}

/*
 * Copyright 2014 Timothy Brooks
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package net.uncontended.precipice.metrics;

import net.uncontended.precipice.concurrent.LongAdder;

public class MetricCounter {

    public static final MetricCounter NO_OP_COUNTER = new MetricCounter() {
        @Override
        public void incrementMetric(Metric metric) {
        }

        @Override
        public long getMetricCount(Metric metric) {
            return 0L;
        }
    };

    private final LongAdder[] metrics;

    public MetricCounter() {
        Metric[] metricValues = Metric.values();

        metrics = new LongAdder[metricValues.length];
        for (Metric metric : metricValues) {
            metrics[metric.ordinal()] = new LongAdder();
        }
    }

    public void incrementMetric(Metric metric) {
        metrics[metric.ordinal()].increment();
    }

    public long getMetricCount(Metric metric) {
        return metrics[metric.ordinal()].longValue();
    }
}

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