content: /*
   * 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.airlift.stats;
  
  import com.google.errorprone.annotations.concurrent.GuardedBy;
  import io.airlift.units.Duration;
  
  import static java.util.concurrent.TimeUnit.NANOSECONDS;
  
  public class TestingGcMonitor
          implements GcMonitor
  {
      @GuardedBy("this")
      private long majorGcCount;
  
      @GuardedBy("this")
      private long majorGcTimeNanos;
  
      public synchronized void recordMajorGc(Duration duration)
      {
          majorGcCount++;
          majorGcTimeNanos += duration.roundTo(NANOSECONDS);
      }
  
      @Override
      public synchronized long getMajorGcCount()
      {
          return majorGcCount;
      }
  
      @Override
      public synchronized Duration getMajorGcTime()
      {
          return new Duration(majorGcTimeNanos, NANOSECONDS);
      }
  }
  