/*
 * Copyright 2008-2010 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package com.sun.btrace.samples;

import com.sun.btrace.annotations.*;
import static com.sun.btrace.BTraceUtils.*;

/**
 * This script demonstrates the possibility to intercept
 * array creations that are about to be executed from the body of
 * a certain method. This is achieved by using the {@linkplain Kind#NEWARRAY}
 * location value.
 */
@BTrace public class NewArray {
    // component count
    private static volatile long count;

    @OnMethod(
      clazz="/.*/", // tracking in all classes; can be restricted to specific user classes
      method="/.*/", // tracking in all methods; can be restricted to specific user methods
      location=@Location(value=Kind.NEWARRAY, clazz="char")
    )
    public static void onnew(@ProbeClassName String pcn, @ProbeMethodName String pmn, String arrType, int dim) {
        // pcn - allocation place class name
        // pmn - allocation place method name
        // **** following two parameters MUST always be in this order
        // arrType - the actual array type
        // dim - the array dimension

        // increment counter on new array
        count++;
    }

    @OnTimer(2000)
    public static void print() {
        // print the counter
        println(Strings.strcat("char[] count = ", str(count)));
    }
}