Libra

Libra provides the means to weigh your Objects.

API

long myObjectSize = Libra.getObjectSize("Hello world");

That's it. No more.

Bootstrapping

There are two ways to boot up Libra.

Java Agent

java -javaagent:jboss-libra.jar MyMain

Libra will be initialized through the Java Agent mechanism.

tools.jar

java -cp $JAVA_HOME/lib/tools.jar MyMain

Libra will initialize itself through the Attach API.

Usage in AS 7

For usage in AS 7 please refer to How-To: use Libra in AS 7.