Re: RE: RPGLE call Java throws MCH74A5

Ok, I see how that works, it starts a new job every time RUNJVA is executed. That new job contains it's own JVM which needs to be started as well. Definitely a high cost operation.

Mark Murphy
STAR BASE Consulting, Inc.
mmurphy@xxxxxxxxxxxxxxx


-----"D*B" <dieter.bender@xxxxxxxxxxxx> wrote: -----
To: <rpg400-l@xxxxxxxxxxxx>
From: "D*B" <dieter.bender@xxxxxxxxxxxx>
Date: 11/30/2015 02:05PM
Subject: RE: RPGLE call Java throws MCH74A5


<justin>
D*B: Currently I'm calling the Java using the QCMDEXC API to call RUNJVA. I want to go away from that is just use JNI (D-spec ExtProc(:*JAVA)). I'm assuming that QCMDEXC/RUNJVA starts a new JVM for every call, while JNI would reuse the JVM.

The Java is SVNKIT, which is an API for interacting with a Subversion server for code versioning.

</justin>

RUNJVA would start a new JVM for every call, making it very slow. CommandGate provides a command RUNJVARUN, wich is handled similar to RUNJVA, using a prestarted JVM (via AppServer4RPG). System.exit() would kill the JVM (same should happen, if you are calling the main of the cli via JNI). The technic with Security Manager is disabled at the moment inside CommandGate, but this could be changed very quick (just uncomment some lines). A first look to the svn.cli sources shows up, that this could work for this. To assist you further, I would need the complete command, you are using at the moment (RUNJVA ...), the needed jars and where to get to reproduce the situation, hopefully I will find a box with an appropriate java version and I could have a try.

D*B