DTraceInline.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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package com.sun.btrace.dtrace.samples;

import com.sun.btrace.annotations.OnMethod;
import com.sun.btrace.annotations.BTrace;
import static com.sun.btrace.ext.Printer.*;
import com.sun.btrace.ext.Threads;
import com.sun.btrace.dtrace.D;

/*
 * This sample demonstrates DTrace/BTrace integration.
 * A one-liner D-script is submites once the scritp is loaded. 
 * In this example on new Java Thread starts, BTrace action raises a
 * DTrace probe. The D-script prints mixed mode stack
 * trace on receiving this probe.
 */
@BTrace
public class DTraceInline {
    static {
        D.submit("btrace$1:::event / copyinstr(arg0) == \"mstack\" / { jstack(); }");
    }
    @OnMethod(
        clazz="java.lang.Thread",
        method="start"
    )
    public static void newThread(Thread th) {
        println(Threads.name(th));
        D.probe("mstack", "");
    } 
}