The version of Apache log4j used by SoundHelix.
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SystemTime.java
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software
* License version 1.1, a copy of which has been included with this
* distribution in the LICENSE.APL file. */
package org.apache.log4j.performance;
/**
Measures the time required to make a System.currentTimeMillis() and
Thread.currentThread().getName() calls.
<p>On an 233Mhz NT machine (JDK 1.1.7B) the
System.currentTimeMillis() call takes under half a microsecond to
complete whereas the Thread.currentThread().getName() call takes
about 4 micro-seconds.
*/
public class SystemTime {
static int RUN_LENGTH = 1000000;
static
public
void main(String[] args) {
double t = systemCurrentTimeLoop();
System.out.println("Average System.currentTimeMillis() call took " + t);
t = currentThreadNameloop();
System.out.println("Average Thread.currentThread().getName() call took "
+ t);
}
static
double systemCurrentTimeLoop() {
long before = System.currentTimeMillis();
long l;
for(int i = 0; i < RUN_LENGTH; i++) {
l = System.currentTimeMillis();
}
return (System.currentTimeMillis() - before)*1000.0/RUN_LENGTH;
}
static
double currentThreadNameloop() {
long before = System.currentTimeMillis();
String t;
for(int i = 0; i < RUN_LENGTH; i++) {
t = Thread.currentThread().getName();
}
return (System.currentTimeMillis() - before)*1000.0/RUN_LENGTH;
}
}