Crash when reading 1000 image files from fibers

[David Holmes]

On 1/09/2019 6:03 pm, Alan Bateman wrote:
> On 01/09/2019 07:50, Cay Horstmann wrote:
>> I just checked out Loom from Github on a Linux machine and changed the 
>> example from http://horstmann.com/unblog/2019-07-27/ to use fibers. 
>> Good news: The code is much clearer than with completable futures. I 
>> schedule 1000 fibers that do this work:
>>
>>    public void load(LocalDate date, ImageInfo info) {
>>       try {
>>          URL url = new URL(info.getUrlForDate(date));
>>          var in = url.openStream();
>>          info.findImage(new String(in.readAllBytes()));
>>          in.close();
>>          url = new URL(info.getImagePath());
>>          in = url.openStream();
>>          info.setImageData(in.readAllBytes());
>>          in.close();
>>          process(info); // Saves the bytes to a file
>>       } catch (Exception ex) {
>>          ex.printStackTrace();
>>       }
>>    }
>>
>> Unfortunately, after about 800 images, the program dies with the 
>> message below.
>>
>> Does this look like I am touching anything that's not yet supported? 
>> If not, do you really want crash reports sent to 
>> http://bugreport.java.com/bugreport/crash.jsp, or is there some other 
>> process?
> I don't think bugreport.java.com knows about this project (it doesn't 
> know about the other main projects either).

Might be a good idea for all projects with their own repos and builds to 
update that message to not direct people to 
http://bugreport.java.com/bugreport/crash.jsp. We've had a couple come 
through for other projects already.

Cheers,
David
------

  So here is best. Is the
> example small enough to send? There are a number of stability issues 
> right now, sadly this is normal while we are still in this 
> prototyping/exploration phase.
> 
> -Alan
>