/*
* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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;
}
}