core/src/main/java/io/grpc/internal/AtomicLongCounter.java

/*
 * Copyright 2017 The gRPC Authors
 *
 * 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 io.grpc.internal;

import java.util.concurrent.atomic.AtomicLong;

/**
 * An implementation of {@link LongCounter} that is just an {@link AtomicLong}.
 */
final class AtomicLongCounter implements LongCounter {
  private final AtomicLong counter = new AtomicLong();

  /**
   * Creates an {@link AtomicLongCounter}.
   */
  AtomicLongCounter() {
  }

  @Override
  public void add(long delta) {
    counter.getAndAdd(delta);
  }

  @Override
  public long value() {
    return counter.get();
  }
}