Yan created PDFBOX-3376:
---------------------------
Summary: Memory leak in PDDcoument.close method
Key: PDFBOX-3376
URL: https://issues.apache.org/jira/browse/PDFBOX-3376
Project: PDFBox
Issue Type: Bug
Components: PDModel
Affects Versions: 2.0.1
Reporter: Yan
PDFBox PDDocument still uses memory after destruction. This causes,
surprisingly, memory leaks in Java. Sample code:
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.Vector;
import org.apache.pdfbox.pdmodel.PDDocument;
//javac -cp pdfbox.jar:commons-logging.jar Mrg.java
//java -cp pdfbox.jar:commons-logging.jar:. Mrg *pdf
public class Mrg
{
public static void main(String[] args) throws Exception
{
Runtime instance = Runtime.getRuntime();
System.err.println("Start: "+instance.totalMemory());
List <PDDocument> infiles = new Vector<PDDocument>();
String outname = "Output.pdf";
for(int i=0; i<args.length; i++)
infiles.add(PDDocument.load(new File (args[i])));
PDDocument result = new PDDocument();
for (PDDocument input : infiles)
{
int inpages = input.getNumberOfPages();
for (int i=0; i<inpages; ++i)
result.addPage(input.getPage(i));
}
try {
result.save(outname);
} catch (IOException e) {
System.err.println(e.getMessage());
System.exit(1);
}
result.close();
Thread.currentThread().sleep(1000);
System.err.println("All open: "+instance.totalMemory());
for (PDDocument i : infiles)
i.close();
Thread.currentThread().sleep(1000);
System.err.println("All closed: "+instance.totalMemory());
(new java.util.Scanner(System.in)).nextLine();
System.err.println("Finish: "+instance.totalMemory());
}
}
Mine output:
>Start: 125829120
>All open: 277872640
>All closed: 277872640
>rthrth
>Finish: 277872640
The same happens with my main program (I was blaming SwingWorker):
https://github.com/Yanpas/PdfMerger
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