/*

 */

package sun.tracing.dtrace;

import java.lang.reflect.Method;

import java.lang.reflect.InvocationTargetException;

import sun.tracing.ProbeSkeleton;

class DTraceProbe extends ProbeSkeleton {

    private Object proxy;

    private Method declared_method;

    private Method implementing_method;

    DTraceProbe(Object proxy, Method m) {

        super(m.getParameterTypes());

        this.proxy = proxy;

        this.declared_method = m;

        try {

            // The JVM will override the proxy method's implementation with

            // a version that will invoke the probe.

            this.implementing_method =  proxy.getClass().getMethod(

                m.getName(), m.getParameterTypes());

        } catch (NoSuchMethodException e) {

            throw new RuntimeException("Internal error, wrong proxy class");

        }

    }

    public boolean isEnabled() {

        return JVM.isEnabled(implementing_method);

    }

    public void uncheckedTrigger(Object[] args) {

        try {

            implementing_method.invoke(proxy, args);

        } catch (IllegalAccessException e) {

            assert false;

        } catch (InvocationTargetException e) {

            assert false;

        }

    }

    String getProbeName() {

        return DTraceProvider.getProbeName(declared_method);

    }

    String getFunctionName() {

        return DTraceProvider.getFunctionName(declared_method);

    }

    Method getMethod() {

        return implementing_method;

    }

    Class<?>[] getParameterTypes() {

        return this.parameters;

    }

}