97 lines
3.1 KiB
Java
97 lines
3.1 KiB
Java
/****************************************************************************
|
|
* This software is part of the gCube Project.
|
|
* Site: http://www.gcube-system.org/
|
|
****************************************************************************
|
|
* The gCube/gCore software is licensed as Free Open Source software
|
|
* conveying to the EUPL (http://ec.europa.eu/idabc/eupl).
|
|
* The software and documentation is provided by its authors/distributors
|
|
* "as is" and no expressed or
|
|
* implied warranty is given for its use, quality or fitness for a
|
|
* particular case.
|
|
****************************************************************************
|
|
* Filename: PerformanceMonitor.java
|
|
****************************************************************************
|
|
* @author <a href="mailto:daniele.strollo@isti.cnr.it">Daniele Strollo</a>
|
|
***************************************************************************/
|
|
|
|
package org.gcube.resourcemanagement.support.shared.util;
|
|
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
/**
|
|
* This class has been introduced to internally check the
|
|
* performance of method calls and operations in general.
|
|
*
|
|
* @author Daniele Strollo (ISTI-CNR)
|
|
*/
|
|
public class PerformanceMonitor {
|
|
private long startMills = 0;
|
|
private long stopMills = 0;
|
|
private long lastInterval = 0;
|
|
private long intermediateInterval = 0;
|
|
private StackTraceElement caller = null;
|
|
public String ownerID = null;
|
|
private final static Map<String, PerformanceMonitor> clocks = new HashMap<String, PerformanceMonitor>();
|
|
|
|
private StackTraceElement getCaller(final int depth) {
|
|
final StackTraceElement[] ste = new Throwable().getStackTrace();
|
|
StackTraceElement position = ste[ste.length - 1 - depth];
|
|
return position;
|
|
}
|
|
|
|
public static PerformanceMonitor getClock(String ownerID) {
|
|
if (clocks.containsKey(ownerID)) {
|
|
return clocks.get(ownerID);
|
|
}
|
|
PerformanceMonitor retval = new PerformanceMonitor(ownerID);
|
|
clocks.put(ownerID, retval);
|
|
return retval;
|
|
}
|
|
|
|
public static PerformanceMonitor getClock(Class<?> owner) {
|
|
return getClock(owner.getName());
|
|
}
|
|
|
|
private PerformanceMonitor(String owner) {
|
|
this.ownerID = owner;
|
|
this.caller = this.getCaller(1);
|
|
}
|
|
|
|
public final void start() {
|
|
this.startMills = System.currentTimeMillis();
|
|
this.stopMills = 0;
|
|
this.lastInterval = 0;
|
|
this.intermediateInterval = 0;
|
|
}
|
|
public final float stop(final boolean relative) {
|
|
this.stopMills = System.currentTimeMillis();
|
|
this.intermediateInterval = (this.stopMills - this.startMills) - this.lastInterval;
|
|
this.lastInterval = this.stopMills - this.startMills;
|
|
|
|
if (relative) {
|
|
return this.getIntermediateIntervalSecs();
|
|
}
|
|
return this.getLastIntervalSecs();
|
|
}
|
|
private final float getIntermediateIntervalSecs() {
|
|
if (this.intermediateInterval == 0) {
|
|
return 0;
|
|
}
|
|
return this.intermediateInterval / 1000F;
|
|
}
|
|
private final float getLastIntervalSecs() {
|
|
if (this.lastInterval == 0) {
|
|
return 0;
|
|
}
|
|
return this.lastInterval / 1000F;
|
|
}
|
|
public final StackTraceElement getCaller() {
|
|
return this.caller;
|
|
}
|
|
public final String getOwnerID() {
|
|
return this.ownerID;
|
|
}
|
|
|
|
}
|