| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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 org.apache.geode.internal.offheap; |
| |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.apache.geode.logging.internal.executors.LoggingExecutors; |
| |
| public class NonRealTimeStatsUpdater { |
| private final Runnable updateTask; |
| private final ScheduledExecutorService updateNonRealTimeStatsExecutor; |
| private final AtomicReference<ScheduledFuture<?>> updateNonRealTimeStatsFuture = |
| new AtomicReference<>(); |
| |
| NonRealTimeStatsUpdater(Runnable updateTask) { |
| this.updateTask = updateTask; |
| updateNonRealTimeStatsExecutor = |
| LoggingExecutors.newSingleThreadScheduledExecutor("Update Freelist Stats thread"); |
| |
| } |
| |
| void start(int updateOffHeapStatsFrequencyMs) { |
| updateNonRealTimeStatsFuture |
| .set(updateNonRealTimeStatsExecutor.scheduleAtFixedRate(updateTask, 0, |
| updateOffHeapStatsFrequencyMs, TimeUnit.MILLISECONDS)); |
| } |
| |
| void stop() { |
| updateNonRealTimeStatsFuture.get().cancel(true); |
| updateNonRealTimeStatsExecutor.shutdown(); |
| } |
| } |