/*
* Copyright 2009 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.
*
* 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.
*/
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import com.sun.btrace.annotations.*;
import static com.sun.btrace.BTraceUtils.*;
/**
* Prints histogram of VisageBase.notifyDependents$ calls once every 10 sec.
*
* @author A. Sundararajan
*/
@BTrace public class NotificationHisto {
private static Map<String, AtomicInteger> histo = newHashMap();
@OnMethod(
clazz="org.visage.runtime.VisageBase",
method="notifyDependents$"
)
public static void onNotifyDependents(@Self Object obj) {
String cn = name(classOf(obj));
AtomicInteger ai = get(histo, cn);
if (ai == null) {
ai = newAtomicInteger(1);
put(histo, cn, ai);
} else {
incrementAndGet(ai);
}
}
@OnTimer(10000)
public static void print() {
if (size(histo) != 0) {
printNumberMap("Notification Histogram", histo);
println("======================================");
}
}
}