| /* |
| * 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.statistics; |
| |
| import java.util.function.BooleanSupplier; |
| import java.util.function.LongSupplier; |
| |
| import org.apache.geode.annotations.Immutable; |
| |
| public class StatisticsClockFactory { |
| |
| @Immutable |
| public static final String ENABLE_CLOCK_STATS_PROPERTY = "enableClockStats"; |
| |
| @Immutable |
| public static final boolean enableClockStats = Boolean.getBoolean(ENABLE_CLOCK_STATS_PROPERTY); |
| |
| /** |
| * TODO: delete getTimeIfEnabled |
| */ |
| @Deprecated |
| public static long getTimeIfEnabled() { |
| return enableClockStats ? getTime() : 0; |
| } |
| |
| public static long getTime() { |
| return System.nanoTime(); |
| } |
| |
| /** |
| * Creates new {@code StatisticsClock} using {@code enableClockStats} system property. |
| */ |
| public static StatisticsClock clock() { |
| return clock(Boolean.getBoolean(ENABLE_CLOCK_STATS_PROPERTY)); |
| } |
| |
| /** |
| * Creates new {@code StatisticsClock} using specified boolean value. |
| */ |
| public static StatisticsClock clock(boolean enabled) { |
| if (enabled) { |
| return enabledClock(StatisticsClockFactory::getTime); |
| } |
| return disabledClock(); |
| } |
| |
| public static StatisticsClock enabledClock() { |
| return clock(StatisticsClockFactory::getTime, () -> true); |
| } |
| |
| public static StatisticsClock enabledClock(LongSupplier time) { |
| return clock(time::getAsLong, () -> true); |
| } |
| |
| public static StatisticsClock disabledClock() { |
| return clock(() -> 0, () -> false); |
| } |
| |
| public static StatisticsClock clock(LongSupplier time, BooleanSupplier isEnabled) { |
| return new StatisticsClock() { |
| @Override |
| public long getTime() { |
| return time.getAsLong(); |
| } |
| |
| @Override |
| public boolean isEnabled() { |
| return isEnabled.getAsBoolean(); |
| } |
| }; |
| } |
| |
| } |