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The SoftiCAR Platform is a lightweight, Java-based library to create interactive business web applications.
package com.softicar.platform.common.core.logging;
import com.softicar.platform.common.core.singleton.Singleton;
import java.util.Date;
import java.util.Map;
import java.util.TreeMap;
/**
* Utility class for measuring and logging of elapsed time.
*
* @author Oliver Richers
*/
public class TimingLog {
private static final Singleton> ENTRY_MAP = new Singleton<>(TreeMap::new);
public static void begin(String name) {
TimingEntry unit = getEntryMap().get(name);
if (unit == null) {
getEntryMap().put(name, unit = new TimingEntry(name));
}
unit.begin = new Date();
}
public static void end(String name) {
TimingEntry unit = getEntryMap().get(name);
++unit.count;
unit.elapsed += System.currentTimeMillis() - unit.begin.getTime();
}
public static long getElapsed(String name) {
TimingEntry unit = getEntryMap().get(name);
if (unit != null) {
return unit.elapsed;
} else {
return 0;
}
}
public static void log() {
Log.info(">>>--- TIMING --->>>");
for (TimingEntry unit: getEntryMap().values()) {
Log.info("" + unit);
}
Log.info("<<<--- TIMING ---<<<");
}
public static void logAsWarning() {
Log.warning(">>>--- TIMING --->>>");
for (TimingEntry unit: getEntryMap().values()) {
Log.warning("" + unit);
}
Log.warning("<<<--- TIMING ---<<<");
}
private static Map getEntryMap() {
return ENTRY_MAP.get();
}
private static class TimingEntry {
public final String name;
public int count = 0;
public long elapsed = 0;
public Date begin;
public TimingEntry(String name) {
this.name = name;
}
@Override
public String toString() {
return name + ": count(" + count + ") elapsed(" + elapsed + "ms) avg(" + elapsed / count + "ms)";
}
}
}