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Posted to dev@ant.apache.org by bu...@apache.org on 2003/12/01 15:07:08 UTC
DO NOT REPLY [Bug 25108] New: -
Suspected memory leak when using filters to copy a large number of files
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=25108
Suspected memory leak when using filters to copy a large number of files
Summary: Suspected memory leak when using filters to copy a large
number of files
Product: Ant
Version: 1.5.4
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: Normal
Priority: Other
Component: Core tasks
AssignedTo: dev@ant.apache.org
ReportedBy: Marc.Philips@eurocontrol.int
In order to highlight the problem, I wrote a simple filter that prints the
total amount of memory used by the JVM. As this filter is used to copy a large
number of files, ant output shows that the memory usage increases periodically.
Filter:
-------
package eurocontrol.cfmu.tools.ant.filters;
import java.io.IOException;
import java.io.Reader;
import org.apache.tools.ant.filters.BaseParamFilterReader;
public class MyFilterReader extends BaseParamFilterReader {
public MyFilterReader() {
super();
}
public MyFilterReader(Reader in) {
super(in);
}
public void close() throws IOException {
super.close();
in.close();
System.out.println(Runtime.getRuntime().totalMemory());
}
}
Build file:
-----------
<fileset dir = "${srcdir}" id = "copy-set">
<!-- on my system, any fileset with 5000+ files will cause ant
-- to report an exception in thread main -->
</fileset>
<target name = "with-filter">
<copy todir = "${destdir}">
<fileset refid = "copy-set"/>
<filterchain>
<filterreader classname =
"eurocontrol.cfmu.tools.ant.filters.MyFilterReader">
<classpath>
<pathelement location = "${libdir}"/>
</classpath>
</filterreader>
</filterchain>
</copy>
</target>
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