[ImageJ-bugs] [Bug 874] New: Headless ImageJ2 takes about a minute extra to exit after finishing script or macro

[bugzilla at fiji.sc]

http://fiji.sc/bugzilla/show_bug.cgi?id=874

            Bug ID: 874
           Summary: Headless ImageJ2 takes about a minute extra to exit
                    after finishing script or macro
           Product: Fiji
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: ImageJ2
          Assignee: imagej-bugs at imagej.net
          Reporter: polleke at gmail.com

Created attachment 188
  --> http://fiji.sc/bugzilla/attachment.cgi?id=188&action=edit
ImageJ2 properties

In the daily version of ImageJ2, when running a script like this:

./ImageJ-linux64 --headless -macro scripts/short.js

Takes about a minute after completion of the script to return to command line.
The script contains "print('foo')". It also happens with macros (.ijm). 

I can reproduce this on a wide variety of linux installs and JRE's. But it only
happens in pure ImageJ2, when installing the daily version of Fiji it does not
happen. 

When adding eval("script", "System.exit(0);"); it is fixed. Using run('Quit');
has no effect.

I'll attach the Java heap dump while waiting for ImageJ to exit. The ImageJ
properties output has been attached already.

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