Hello Pirmin,
On 11/20/19 5:33 PM, Duss Pirmin wrote:
Hello Genodians
I'm tying to optimize the startup time of a java application (ARM board), as starting the JVM takes several seconds on our board.
To do this, I tried to move the classes.tar in to a separate vfs component [1]. This crashes the JVM with the following error message:
[init -> java] Error occurred during initialization of VM [init -> java] java.lang.NoClassDefFoundError: java/util/concurrent/ConcurrentHashMap [init -> java] at java.lang.WeakPairMap.<init>(java.base/WeakPairMap.java:47) [init -> java] at java.lang.Module.<clinit>(java.base/Module.java:267)
Can anyone tell me, why this happens? Is there a way to fix this?
[1] https://github.com/trimpim/genode-world/commit/3ec7d915e20576a786a3e89decb49...
I have tried to reproduce your issue by applying your commit and testing it on base-hw in Qemu (pbxa9). This worked so far. The 'NoClassDefFoundError' usually occurs if something goes wrong during class compilation or dependency loading, or something is corrupt. If Java could not find a class it would throw a 'ClassNotFoundException'.
Regards,
Sebastian