btrace script

NetorkInterfaceFtracer.java

import com.sun.btrace.annotations.*;
import com.sun.btrace.aggregation.Aggregation;
import com.sun.btrace.aggregation.AggregationKey;
import com.sun.btrace.aggregation.AggregationFunction;

import static com.sun.btrace.BTraceUtils.*;
/**
 * run as:
 * $ su dcache -c "/opt/btrace/bin/btrace <pid> NetorkInterfaceFtracer.java"
 */
@BTrace public class NetorkInterfaceFtracer {

    private static Aggregation average = Aggregations.newAggregation(AggregationFunction.AVERAGE);
    private static Aggregation count = Aggregations.newAggregation(AggregationFunction.COUNT);

    @OnMethod(
        clazz="java.net.Inet6Address",
        method="readObject",
        location = @Location(Kind.RETURN)
    )
    public static void func(@ProbeClassName String pcm, @ProbeMethodName String pmn, @Duration long duration) {
        AggregationKey key = Aggregations.newAggregationKey(Strings.strcat(pcm, Strings.strcat("#", pmn)));
        Aggregations.addToAggregation(average, key, duration);
        Aggregations.addToAggregation(count, key, 1);
    }

    @OnEvent
    @OnTimer(20000)
    public static void onEvent() {
        println("---------------------------------------------");
        Aggregations.printAggregation("Average", average);
        Aggregations.printAggregation("Count", count);
        println("---------------------------------------------");
        Sys.exit(0);
    }
}