java.lang.UnsupportedOperationException: Native object address is NULL in org.opencv.core.Mat.<init> (Bug #3613)

Added by Arsen L almost 11 years ago. Updated over 9 years ago.

Status:Open Start date:2014-03-16
Priority:Normal Due date:
Assignee:Alexander Smorkalov % Done:

0%
Category:java bindings
Target version:-
Affected version:2.4.8 (latest release) Operating System:Windows
Difficulty: HW Platform:x64
Pull request:

Description

Sporadically (quite rarely) receiving following exception in my java-application

Exception in thread "pool-4-thread-4" java.lang.UnsupportedOperationException: Native object address is NULL
    at org.opencv.core.Mat.<init>(Mat.java:424)
    at org.opencv.utils.Converters.Mat_to_vector_Mat(Converters.java:266)
    at org.opencv.utils.Converters.Mat_to_vector_vector_Point(Converters.java:500)
    at org.opencv.imgproc.Imgproc.findContours(Imgproc.java:5851)

Interesting, that if JVM launched in debug mode - this is not happen (issue relates to JVM?)

Tried on 1.7.0_45 and following one JVMs:
Java HotSpot(TM) 64-Bit Server VM; 1.7.0_51; 24.51-b03; mixed mode

sources_to_reproduce.zip (97.4 kB) Arsen L, 2014-03-19 11:25 am

Associated revisions

Revision 9a6a046c
Added by Vadim Pisarevsky about 10 years ago

Merge pull request #3613 from asmorkalov:aarch64_tiff

History

#1
Updated by Daniil Osokin almost 11 years ago

Hi, Arsen!

Looks like it's an issue in your code. Anyway, please provide code sample, that reproduce this problem. Also may be you could debug this issue? It will help a lot!

  • Assignee changed from Vadim Pisarevsky to Arsen L

#2
Updated by Arsen L almost 11 years ago

Daniil,

I made working example (see file attached) on which you may reproduce this issue.
My current assumption is that this exception depends on some in-JVM concurrency optimizations.

I realize, that calling MyOpenCvUtils.init() in BorderDetectorWorker.borderField() smells, but leave it as is: it looks like it will increase probability to reproduce issue.
Replace path to image to real path (Main.IMAGE_PATH) on your machine. Also, launch JVM with -Djava.library.path="path_to_opencv_java248.dll" and declare library "opencv-248.jar" for sources which I prepared.

Please, try to launh Main.main() with Main.THREAS_NUM equals to number of your machine CPU cores.
After about 5-10 minutes of running you should see following excetion in console:

Exception in thread "Thread-3" java.lang.UnsupportedOperationException: Native object address is NULL
    at org.opencv.core.Mat.<init>(Mat.java:424)
    at org.opencv.utils.Converters.Mat_to_vector_Mat(Converters.java:266)
    at org.opencv.utils.Converters.Mat_to_vector_vector_Point(Converters.java:500)
    at org.opencv.imgproc.Imgproc.findContours(Imgproc.java:5851)
    at BorderDetectorWorker.borderField(BorderDetectorWorker.java:22)
    at BorderDetectorWorker.run(BorderDetectorWorker.java:32)
    at java.lang.Thread.run(Unknown Source)

Note, that if laumced JVM in debug mode exception will not be thrown (so, there is no sense to debug code).
So, that's why I started to think this bug relates to Sun/Oracle JVM.

Please, let me know if you reproduced this issue or if I can assist you with something.

#3
Updated by Arsen L almost 11 years ago

  • Assignee changed from Arsen L to Daniil Osokin

#4
Updated by Daniil Osokin almost 11 years ago

Thanks, Arsen. We will try to reproduce.

  • Assignee changed from Daniil Osokin to Alexander Smorkalov
  • Category changed from imgproc, video to java bindings

#5
Updated by Sergei Nosov almost 11 years ago

  • Status changed from New to Open

#6
Updated by Piotr Betkier over 10 years ago

I observe the same issue in my application when using OpenCV concurrently. I'm using OpenCV 2.4.9 on Linux.

#7
Updated by Maksim Shabunin over 9 years ago

Issue has been transferred to GitHub: https://github.com/Itseez/opencv/issues/4720

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