import static com.sun.btrace.BTraceUtils.name;

import static com.sun.btrace.BTraceUtils.print;

import static com.sun.btrace.BTraceUtils.println;

import static com.sun.btrace.BTraceUtils.probeClass;

import static com.sun.btrace.BTraceUtils.probeMethod;

import static com.sun.btrace.BTraceUtils.str;

import static com.sun.btrace.BTraceUtils.strcat;

import static com.sun.btrace.BTraceUtils.timeMillis;

import com.sun.btrace.annotations.BTrace;

import com.sun.btrace.annotations.Kind;

import com.sun.btrace.annotations.Location;

import com.sun.btrace.annotations.OnMethod;

import com.sun.btrace.annotations.TLS;

@BTrace

public class MethodTimeCost {

    @TLS private static long starttime;

    @OnMethod(clazz="/org\\..*/", method="/.+/",location=@Location(Kind.ENTRY))

    public static void startExecute() {

        starttime = timeMillis();

    }

    @OnMethod(clazz="/org\\..*/", method="/.+/",location=@Location(Kind.RETURN))

    public static void endExecute() {

        long timecost = timeMillis() - starttime;

        if(timecost > 50) {

            print(strcat(strcat(name(probeClass()), "."), probeMethod()));

            print("  [");

            print(strcat("Time taken : ", str(timecost)));

            println("]");

        }

    }

}

package org.shaojun.test;

public class MyTest {

    public static void main(String[] args) {

        for(int i = 0;i < 100; i++) {

            Thread t = new Thread() {

                @Override

                public void run() {

                    Slow slow = new Slow();

                    slow.query();

                }

            };

            t.start();

        }

    }

}

package org.shaojun.test;

public class Slow {

    public void query() {

        while(true) {

            slow();

        }

    }

    public void slow() {

        slow2();

    }

    public void slow2() {

        try {

            Thread.sleep(5000);

        } catch (InterruptedException e) {

            e.printStackTrace();

        }

        System.out.println("helloworld");

    }

}