| /* |
| * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| 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; |
| } |
| } |
| |