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https://issues.apache.org/jira/browse/PDFBOX-3376?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yan updated PDFBOX-3376:
------------------------
Attachment: Снимок экрана_2016-06-11_18-01-25.png
Here I've performed the same merge 5 times. I've added System.gc() call at the
end of each merging.. Commited memory expanded to !gb and stopped to grow. I've
also got 15 warnings despite I'm sure that have closed all documents:
TIME org.apache.pdfbox.cos.COSDocument finalize
WARNING: Warning: You did not close a PDF Document
> 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
> Attachments: Снимок экрана_2016-06-11_16-12-36.png, Снимок
> экрана_2016-06-11_18-01-25.png
>
>
> PDFBox PDDocument still uses memory after destruction. This causes,
> surprisingly, memory leaks in Java. Sample code:
> {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());
> }
> }
> {code}
> 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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