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/* NEST (New Scala Test)
* Copyright 2007-2013 LAMP/EPFL
* @author Grzegorz Kossakowski
*/
package scala.tools.partest.javaagent;
import java.lang.instrument.Instrumentation;
import java.lang.instrument.UnmodifiableClassException;
/**
* Profiling agent that instruments byte-code to insert calls to
* {@link scala.tools.partest.instrumented.Profiler#methodCalled(String, String, String)}
* by using ASM library for byte-code manipulation.
*/
public class ProfilingAgent {
public static void premain(String args, Instrumentation inst) throws UnmodifiableClassException {
// NOTE: we are adding transformer that won't be applied to classes that are already loaded
// This should be ok because premain should be executed before main is executed so Scala library
// and the test-case itself won't be loaded yet. We rely here on the fact that ASMTransformer does
// not depend on Scala library. In case our assumptions are wrong we can always insert call to
// inst.retransformClasses.
inst.addTransformer(new ASMTransformer(), true);
}
}
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