/*******************************************************************************
* Copyright (c) 2004, 2010 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.sse.core.tests.threading;
import java.io.IOException;
import java.util.Random;
import junit.framework.TestCase;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IModelManager;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion;
import org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument;
/**
* This class started off as copy of TestOfThreadLocalImprovements, and I just
* added another thread with modifies the document.
*/
public class TestOfThreadLocalWithChanges extends TestCase {
// number of times a pair of tests (with and without) thread local are
// repeated (for more accurate averages).
int nTrials = 3;
IStructuredDocument fDocument = null;
private static final boolean DEBUG_TEST_DETAIL = false;
// tests from 1 to MAX_TREADS-1 threads
private int MAX_THREADS = 14;
private long SLEEP_TIME = 2;
private int N_CHANGES = 10000;
public TestOfThreadLocalWithChanges() throws IOException {
super();
}
private final String getContent() {
return "<test>" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)"
+ "<extra> <junk> to make a <large/> file (over <1000> chars)" + "<extra> <junk> to make a <large/> file (over <1000> chars)" + "</test>";
}
private IStructuredDocument getDocument(String content) throws IOException {
if (fDocument == null) {
IModelManager modelManager = StructuredModelManager.getModelManager();
fDocument = modelManager.createStructuredDocumentFor("testPerf.xml", content, null);
}
return fDocument;
}
void linkRunner(final Boolean direction, IStructuredDocument document) {
IStructuredDocument structuredDocument = document;
IStructuredDocumentRegion previousDocumentRegion = null;
long startTime = System.currentTimeMillis();
int start = 0;
int length = structuredDocument.getLength();
// int nRegions = 0;
// I made length "dynamic" after adding modification thread
for (int i = start; i < structuredDocument.getLength(); i++) {
int index = i;
if (!direction.booleanValue()) {
int currentLength = structuredDocument.getLength();
index = (currentLength - 1) - i;
}
IStructuredDocumentRegion currentDocumentRegion = structuredDocument.getRegionAtCharacterOffset(index);
if (currentDocumentRegion != previousDocumentRegion) {
// nRegions++;
previousDocumentRegion = currentDocumentRegion;
}
Thread.yield();
try {
Thread.sleep(SLEEP_TIME);
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
long endTime = System.currentTimeMillis();
if (DEBUG_TEST_DETAIL) {
System.out.println("Thread: " + Thread.currentThread() + " from " + length + " characters, found " + /*nRegions*/ "" + " regions in " + (endTime - startTime) + " msecs.");
}
}
private long dotestDocumentWalkingWithThreadLocal(int nThreads) throws IOException {
BasicStructuredDocument.setUSE_LOCAL_THREAD(true);
fDocument = getDocument(getContent());
long startTimeOverall = System.currentTimeMillis();
doDocumentWalking(nThreads);
long endTimeOverall = System.currentTimeMillis();
long finalOverall = endTimeOverall - startTimeOverall;
if (DEBUG_TEST_DETAIL) {
System.out.println("Overall time using Local_Thread: " + finalOverall);
}
return finalOverall;
}
private void doDocumentWalking(int nThreads) throws IOException {
Thread[] threads = new Thread[nThreads];
boolean toggle = true;
for (int i = 0; i < threads.length; i++) {
final Boolean direction = new Boolean(toggle);
// toggle controls whether moves from start to end, or end to start
// of document.
toggle = !toggle;
ThreadGroup threadGroup = new ThreadGroup("unit tests");
Thread thread = new Thread(threadGroup, new Runnable() {
public void run() {
linkRunner(direction, fDocument);
}
}, ("sse unit test thread " + i));
// I used MIN_PRIORITY since that makes it easier to "see" in
// debugger list of threads
thread.setPriority(Thread.MIN_PRIORITY);
threads[i] = thread;
}
for (int i = 0; i < threads.length; i++) {
threads[i].start();
}
// now that "readers" have started, we'll start a modification thread
// too
Thread modifyingThread = new Thread(new Runnable() {
public void run() {
modifiyDocument(fDocument);
}
}, ("sse unit test modification thread "));
// I used MAX_PRIORITY to be sure lots of modifications take place
modifyingThread.setPriority(Thread.MIN_PRIORITY);
modifyingThread.start();
try {
for (int i = 0; i < threads.length; i++) {
threads[i].join();
}
modifyingThread.join();
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
void modifiyDocument(IStructuredDocument document) {
Random random = new Random();
for (int i = 0; i < N_CHANGES + 1; i++) {
int randomOffset = random.nextInt(document.getLength());
// 100 just seems like a good maximum length to replace
// (could play with in future).
int randomLength = random.nextInt(100);
// if we "accidently" get more than the length, just skipit
if (randomOffset + randomLength < document.getLength()) {
document.replaceText(this, randomOffset, randomLength, "testingtext");
}
}
}
public void testNThreads() throws IOException {
for (int i = 1; i < MAX_THREADS; i++) {
int nThreads = i;
if (DEBUG_TEST_DETAIL) {
System.out.println(" >>>>---- N Threads: " + i);
}
float wCumm = 0;
for (int j = 0; j < nTrials; j++) {
wCumm = wCumm + dotestDocumentWalkingWithThreadLocal(nThreads);
}
}
// if gets to here (with no exceptions) all is ok.
assertTrue(0 == 0);
}
}