/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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 com.android.tools.perflib.vmtrace.viz;
import java.text.DecimalFormat;
import java.util.concurrent.TimeUnit;
public class TimeUtils {
public static String makeHumanReadable(long time, long span, TimeUnit timeUnits) {
String units;
double scale;
if (timeUnits.toSeconds(span) > 0) {
units = "s";
scale = 1e-9;
} else if (timeUnits.toMillis(span) > 0) {
units = "ms";
scale = 1e-6;
} else {
units = "us";
scale = 1e-3;
}
return String.format("%1$s %2$s", formatTime(timeUnits.toNanos(time), scale), units);
}
private static final DecimalFormat TIME_FORMATTER = new DecimalFormat("#.###");
private static String formatTime(long nsecs, double scale) {
return TIME_FORMATTER.format(nsecs * scale);
}
}