I found this in Velocity 1.3, but I have tried the same test with a cvs checkout of Velocity from today, and it showed the same problem. If I let the test run with a max heap size of 64Mb, it will fail with OutOfMemoryError exception after about 34.000 iterations.
I have attached the JUnit.
Cheers, Kim Madsen
/* Copyright (C) 1998-2002, Inceptor, Inc. All rights reserved worldwide. */ package com.inceptor.rt;
import com.inceptor.base.ExceptionBase;
import com.inceptor.service.DiagnosticsFact;
import com.inceptor.service.DiagnosticsIf;
import com.inceptor.util.Test;
import com.inceptor.util.TestSuite;
import com.inceptor.util.TestCaseJUnit;
import com.inceptor.util.Various;
import java.io.StringWriter;
import java.util.Properties;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.Template;
import org.apache.velocity.app.VelocityEngine;
/** Servlet used to test <code>rt/Servlet</code> functionality.
*
*
* @version $Id: VelocityMemorySimple.java,v 1.3 2003/02/28 17:28:52 kim Exp $
*/
public class VelocityMemorySimple
extends TestCaseJUnit {
private static final DiagnosticsIf diag =
DiagnosticsFact.instance(VelocityMemorySimple.class);
private static final int ROWS_BETWEEN_DISPLAY = 1000;
private static final int ROWS_TO_ITERATE = 50000 * ROWS_BETWEEN_DISPLAY;
private static long lastTime = -1;
public VelocityMemorySimple(String name) throws ExceptionBase {
super(name);
}
///////////////////////////////////////////////////////////////////
private void showInfo(long rowsInserted)
throws Exception {
if (rowsInserted==0) {
System.gc();
lastTime = System.currentTimeMillis();
}
if (rowsInserted%ROWS_BETWEEN_DISPLAY == 0) {
long nowTime = System.currentTimeMillis();
System.gc();
diag.info("Ite=" + rowsInserted
+ " Mem free ="
+ java.lang.Runtime.getRuntime().freeMemory()
+ " Mem total="
+ java.lang.Runtime.getRuntime().totalMemory()
+ " Ite/sec.="
+ ((double) 1000*ROWS_BETWEEN_DISPLAY)/(nowTime-lastTime)
);
lastTime = nowTime;
}
}
public void testMemory()
throws Exception {
try {
Properties p = new Properties();
p.setProperty("runtime.log.logsystem.class",
"org.apache.velocity.runtime.log.SimpleLog4JLogSystem");
p.setProperty("runtime.log.logsystem.log4j.category", "VELOCITY");
p.setProperty("resource.manager.logwhenfound", "true");
p.setProperty("velocimacro.library", "");
p.setProperty("resource.loader",
"datasourceglobal, datasourcecustom");
p.setProperty("datasourceglobal.resource.description",
"Load Templates From java:ExcediaDB Global Resources");
p.setProperty("datasourceglobal.resource.loader.class",
"org.apache.velocity.runtime.resource.loader.DataSourceResourceLoader");
p.setProperty("datasourceglobal.resource.loader.resource.datasource",
"java:ExcediaDB");
p.setProperty("datasourceglobal.resource.loader.resource.table",
"RESOURCEGLOBALS");
p.setProperty("datasourceglobal.resource.loader.resource.keycolumn",
"NAMESTR");
p.setProperty("datasourceglobal.resource.loader.resource.templatecolumn",
"CONTENTCHARACTER");
p.setProperty("datasourceglobal.resource.loader.resource.timestampcolumn",
"MODIFICATIONTIME");
p.setProperty("datasourceglobal.resource.loader.resource.cache",
"true");
p.setProperty("datasourceglobal.resource.loader.resource",
"6");
p.setProperty("datasourcecustom.resource.description",
"Load Templates From java:ExcediaDB Custom Resources");
p.setProperty("datasourcecustom.resource.loader.class",
"org.apache.velocity.runtime.resource.loader.DataSourceResourceLoader");
p.setProperty("datasourcecustom.resource.loader.resource.datasource",
"java:ExcediaDB");
p.setProperty("datasourcecustom.resource.loader.resource.table",
"RESOURCECUSTOMS");
p.setProperty("datasourcecustom.resource.loader.resource.keycolumn",
"NAMESTR");
p.setProperty("datasourcecustom.resource.loader.resource.templatecolumn",
"CONTENTCHARACTER");
p.setProperty("datasourcecustom.resource.loader.resource.timestampcolumn",
"MODIFICATIONTIME");
p.setProperty("datasourcecustom.resource.loader.resource.cache",
"true");
p.setProperty("datasourcecustom.resource.loader.resource",
"6");
VelocityContext context = null;
StringWriter sw = null;
VelocityEngine ve = null;
for (int i=0; i<=ROWS_TO_ITERATE; i++) {
showInfo(i);
ve = new VelocityEngine();
ve.init(p);
}
} catch (OutOfMemoryError e) {
diag.error(e);
throw e;
}
}
public static Test suite() throws Exception {
diag.debug("Setup test suite");
TestSuite suite = new TestSuite();
suite.addTest(new VelocityMemorySimple("testMemory"));
return suite;
}
}
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