java.lang.OutOfMemoryError: Java heap space from SimpleRenderer

[daynok]

Trying to evaluate ghost4j but am getting an outofmemory error on ghost4j 1.0.1
My env:
64 bit linux (arch)
Java 1.8.0_131

Tried multiple times to attach pdf to this ticket.. github kept giving me errors so created a repo with support files

• Driver.java (test app)
• Pro-Git.pdf (test pdf, 7.7M)

https://github.com/daynok/ghost4j-outofmemory

Ran pdfinfo on the pdf and as far as I can tell it looks good. Also opened the pdf in firefox without issue.

From what I can tell the outofmemory error gets thrown at
renderer.render(document);

I'm not sure if I'm doing something wrong programmatically or what.

End goal, convert pdf pages to png's.

package com.medata;

import java.io.File;
import org.ghost4j.document.PDFDocument;
import org.ghost4j.renderer.SimpleRenderer;

public class Driver {

    public static void main(String args[]) {
            try {
                    String sourcePath = args[0];
                    System.out.println("Reading files from path:" + sourcePath);

                    File[] fileList = new File(sourcePath).listFiles();

                    for(File pdfFile : fileList) {
                            System.out.println("starting to process file: " + pdfFile.getName());
                            long startIterTime = System.currentTimeMillis();
                            PDFDocument document = null;
                            SimpleRenderer renderer = null;

                            try {

                                    document = new PDFDocument();
                                    document.load(pdfFile);
                                    renderer = new SimpleRenderer();
                                    renderer.setResolution(300);
                                    renderer.render(document);
                            }
                            catch(Exception e) {
                                    throw e;
                            }
                            finally {
                                    renderer = null;
                                    document = null;
                            }
                            long totalIterTime = System.currentTimeMillis() - startIterTime;
                            System.out.println("file:" + pdfFile.getName() + " total time:" + totalIterTime + " ms, total time sec:" + (totalIterTime/1000));
                    }
            }
            catch(Exception e) {
                    e.printStackTrace();
            }
    }

[4F2E4A2E]

Hey @daynok 👋
Please provide the stacktrace, thanks

[ragwave]

Stack trace:

JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space
	at com.sun.jna.Pointer.getByteArray(Pointer.java:725)
	at org.ghost4j.Ghostscript$10.callback(Ghostscript.java:493)
	at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.sun.jna.CallbackReference$DefaultCallbackProxy.invokeCallback(CallbackReference.java:470)
	at com.sun.jna.CallbackReference$DefaultCallbackProxy.callback(CallbackReference.java:500)
	at com.sun.jna.Native.invokeInt(Native Method)
	at com.sun.jna.Function.invoke(Function.java:383)
	at com.sun.jna.Function.invoke(Function.java:315)
	at com.sun.jna.Library$Handler.invoke(Library.java:212)
	at com.sun.proxy.$Proxy31.gsapi_init_with_args(Unknown Source)
	at org.ghost4j.Ghostscript.initialize(Ghostscript.java:350)
	at org.ghost4j.renderer.SimpleRenderer.run(SimpleRenderer.java:105)
	at org.ghost4j.renderer.AbstractRemoteRenderer.render(AbstractRemoteRenderer.java:86)
	at org.ghost4j.renderer.AbstractRemoteRenderer.render(AbstractRemoteRenderer.java:70)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space
	at com.sun.jna.Pointer.getByteArray(Pointer.java:725)
	at org.ghost4j.Ghostscript$10.callback(Ghostscript.java:493)
	at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.sun.jna.CallbackReference$DefaultCallbackProxy.invokeCallback(CallbackReference.java:470)
	at com.sun.jna.CallbackReference$DefaultCallbackProxy.callback(CallbackReference.java:500)
	at com.sun.jna.Native.invokeInt(Native Method)
	at com.sun.jna.Function.invoke(Function.java:383)
	at com.sun.jna.Function.invoke(Function.java:315)
	at com.sun.jna.Library$Handler.invoke(Library.java:212)
	at com.sun.proxy.$Proxy31.gsapi_init_with_args(Unknown Source)
	at org.ghost4j.Ghostscript.initialize(Ghostscript.java:350)
	at org.ghost4j.renderer.SimpleRenderer.run(SimpleRenderer.java:105)
	at org.ghost4j.renderer.AbstractRemoteRenderer.render(AbstractRemoteRenderer.java:86)
	at org.ghost4j.renderer.AbstractRemoteRenderer.render(AbstractRemoteRenderer.java:70)
	
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space
JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space
JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space
JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space
JNA: Callback org.ghost4j.Ghostscript$10@71b3bc45 threw the following exception:
java.lang.OutOfMemoryError: Java heap space

Q. Is there a limit on no of pages that GS can process at once?
This error comes while processing a pdf with pages > 500. GS was able to process to 147 pages and post that it threw the error.