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/*
* 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.bcel;
public class NanoTimer {
private long time = 0;
public NanoTimer start() {
time -= System.nanoTime();
return this;
}
public void stop() {
time += System.nanoTime();
}
public void subtract(final NanoTimer o) {
time -= o.time;
}
public void reset() {
time = 0;
}
/**
* May ony be called after stop has been called as many times as start.
*/
@Override
public String toString() {
return ((double) time / 1000000000) + " s";
}
}
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