sikuli-driver team mailing list archive

[RaiMan <rmhdevelop@xxxxxx>]

this not a real bug.

The situation can be avoided, when respecting the general rules to avoid
memory leaks.

** Description changed:

+ ***** the problem comes up, using the following loop:
+ 
+ int count = 1;
+ Screen s;
+ while (true) {
+  s = new Screen();
+  System.out.println("Count = "+ count++);
+  s.click("start.png", 0);
+ }
+ 
+ this seems to bind some internal objects, so that GC is not able to free
+ heap memory.
+ 
+ Since this is generally not "good programming" (no need for a new Screen
+ object at each loop turn), the recommended approach does not fill up the
+ heap:
+ 
+ int count = 1;
+ Screen s = new Screen();
+ while (true) {
+  System.out.println("Count = "+ count++);
+  s.click("start.png", 0);
+ }
+ 
+ ----------------------------------------------------------------------------
+ 
  I am running sikuli script from Java program in Win XP 32 bit platform.
  While running the same script iteratively for long time I am getting the
  "OutOfMemory" error which I suspect is because of the memory leak
  problem of sikuli.
  
  While running a simple script, I set the heap space of JVM to 1GB. With
  that, a simple script having 4 calls to API "click" and one call to API
  "exists", ran for around 2 hours and gave the following exception:
  
  Exception in thread "main" java.lang.reflect.InvocationTargetException
-         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
-         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
-         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
-         at java.lang.reflect.Method.invoke(Unknown Source)
-         at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoa
+         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
+         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
+         at java.lang.reflect.Method.invoke(Unknown Source)
+         at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoa
  der.java:58)
  Caused by: java.lang.OutOfMemoryError: Java heap space
-         at java.awt.image.DataBufferInt.<init>(Unknown Source)
-         at java.awt.image.Raster.createPackedRaster(Unknown Source)
-         at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknow
+         at java.awt.image.DataBufferInt.<init>(Unknown Source)
+         at java.awt.image.Raster.createPackedRaster(Unknown Source)
+         at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknow
  n Source)
-         at java.awt.image.BufferedImage.<init>(Unknown Source)
-         at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
-         at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
-         at sun.java2d.loops.MaskBlit$General.MaskBlit(Unknown Source)
-         at sun.java2d.loops.Blit$GeneralMaskBlit.Blit(Unknown Source)
-         at sun.java2d.pipe.DrawImage.blitSurfaceData(Unknown Source)
-         at sun.java2d.pipe.DrawImage.renderImageCopy(Unknown Source)
-         at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
-         at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
-         at sun.java2d.pipe.ValidatePipe.copyImage(Unknown Source)
-         at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
-         at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
-         at org.sikuli.script.OpenCV.convertBufferedImageToByteArray(OpenCV.java:
+         at java.awt.image.BufferedImage.<init>(Unknown Source)
+         at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
+         at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
+         at sun.java2d.loops.MaskBlit$General.MaskBlit(Unknown Source)
+         at sun.java2d.loops.Blit$GeneralMaskBlit.Blit(Unknown Source)
+         at sun.java2d.pipe.DrawImage.blitSurfaceData(Unknown Source)
+         at sun.java2d.pipe.DrawImage.renderImageCopy(Unknown Source)
+         at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
+         at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
+         at sun.java2d.pipe.ValidatePipe.copyImage(Unknown Source)
+         at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
+         at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
+         at org.sikuli.script.OpenCV.convertBufferedImageToByteArray(OpenCV.java:
  35)
-         at org.sikuli.script.OpenCV.convertBufferedImageToMat(OpenCV.java:41)
-         at org.sikuli.script.Finder.<init>(Finder.java:70)
-         at org.sikuli.script.Region.doFind(Region.java:965)
-         at org.sikuli.script.Region$RepeatableFind.run(Region.java:1168)
-         at org.sikuli.script.Region$Repeatable.repeat(Region.java:1139)
-         at org.sikuli.script.Region.wait(Region.java:453)
-         at org.sikuli.script.Region.find(Region.java:333)
-         at org.sikuli.script.Region.getLocationFromPSRML(Region.java:1065)
-         at org.sikuli.script.Region.click(Region.java:562)
+         at org.sikuli.script.OpenCV.convertBufferedImageToMat(OpenCV.java:41)
+         at org.sikuli.script.Finder.<init>(Finder.java:70)
+         at org.sikuli.script.Region.doFind(Region.java:965)
+         at org.sikuli.script.Region$RepeatableFind.run(Region.java:1168)
+         at org.sikuli.script.Region$Repeatable.repeat(Region.java:1139)
+         at org.sikuli.script.Region.wait(Region.java:453)
+         at org.sikuli.script.Region.find(Region.java:333)
+         at org.sikuli.script.Region.getLocationFromPSRML(Region.java:1065)
+         at org.sikuli.script.Region.click(Region.java:562)

** Summary changed:

- X-1.0-rc3: Java: java.lang.OutOfMemoryError: Java heap space at long run
+ Java: how to avoid java.lang.OutOfMemoryError: Java heap space at long run

** Changed in: sikuli
       Status: New => Invalid

** Converted to question:
   https://answers.launchpad.net/sikuli/+question/168247

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Drivers, which is subscribed to Sikuli.
https://bugs.launchpad.net/bugs/825216

Title:
  Java: how to avoid java.lang.OutOfMemoryError: Java heap space at long
  run

Status in Sikuli:
  Invalid

Bug description:
  ***** the problem comes up, using the following loop:

  int count = 1;
  Screen s;
  while (true) {
   s = new Screen();
   System.out.println("Count = "+ count++);
   s.click("start.png", 0);
  }

  this seems to bind some internal objects, so that GC is not able to
  free heap memory.

  Since this is generally not "good programming" (no need for a new
  Screen object at each loop turn), the recommended approach does not
  fill up the heap:

  int count = 1;
  Screen s = new Screen();
  while (true) {
   System.out.println("Count = "+ count++);
   s.click("start.png", 0);
  }

  ----------------------------------------------------------------------------

  I am running sikuli script from Java program in Win XP 32 bit
  platform. While running the same script iteratively for long time I am
  getting the "OutOfMemory" error which I suspect is because of the
  memory leak problem of sikuli.

  While running a simple script, I set the heap space of JVM to 1GB.
  With that, a simple script having 4 calls to API "click" and one call
  to API "exists", ran for around 2 hours and gave the following
  exception:

  Exception in thread "main" java.lang.reflect.InvocationTargetException
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
          at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
          at java.lang.reflect.Method.invoke(Unknown Source)
          at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoa
  der.java:58)
  Caused by: java.lang.OutOfMemoryError: Java heap space
          at java.awt.image.DataBufferInt.<init>(Unknown Source)
          at java.awt.image.Raster.createPackedRaster(Unknown Source)
          at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknow
  n Source)
          at java.awt.image.BufferedImage.<init>(Unknown Source)
          at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
          at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
          at sun.java2d.loops.MaskBlit$General.MaskBlit(Unknown Source)
          at sun.java2d.loops.Blit$GeneralMaskBlit.Blit(Unknown Source)
          at sun.java2d.pipe.DrawImage.blitSurfaceData(Unknown Source)
          at sun.java2d.pipe.DrawImage.renderImageCopy(Unknown Source)
          at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
          at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
          at sun.java2d.pipe.ValidatePipe.copyImage(Unknown Source)
          at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
          at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
          at org.sikuli.script.OpenCV.convertBufferedImageToByteArray(OpenCV.java:
  35)
          at org.sikuli.script.OpenCV.convertBufferedImageToMat(OpenCV.java:41)
          at org.sikuli.script.Finder.<init>(Finder.java:70)
          at org.sikuli.script.Region.doFind(Region.java:965)
          at org.sikuli.script.Region$RepeatableFind.run(Region.java:1168)
          at org.sikuli.script.Region$Repeatable.repeat(Region.java:1139)
          at org.sikuli.script.Region.wait(Region.java:453)
          at org.sikuli.script.Region.find(Region.java:333)
          at org.sikuli.script.Region.getLocationFromPSRML(Region.java:1065)
          at org.sikuli.script.Region.click(Region.java:562)

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