Package groovy.lang

Class BenchmarkInterceptor

  • All Implemented Interfaces:
    Interceptor
    public class BenchmarkInterceptor
extends Object
implements Interceptor
    Interceptor that registers the timestamp of each method call before and after invocation. The timestamps are stored internally and can be retrieved through the with the 
    getCalls()
    and 
    statistic()
    API.

    Example usage: 

     def proxy = ProxyMetaClass.getInstance(ArrayList.class)
 proxy.interceptor = new BenchmarkInterceptor()
 proxy.use {
     def list = (0..10000).collect{ it }
     4.times { list.size() }
     4000.times { list.set(it, it+1) }
 }
 proxy.interceptor.statistic()
    Which produces the following output: 
     [[size, 4, 0], [set, 4000, 21]]

    • Field Detail

      • calls

        protected Map calls

    • Constructor Detail

      • BenchmarkInterceptor

        public BenchmarkInterceptor()

    • Method Detail

      • getCalls

        public Map getCalls()
        Returns the raw data associated with the current benchmark run.

      • reset

        public void reset()
        Resets all the benchmark data on this object.

      • beforeInvoke

        public Object beforeInvoke​(Object object,
                           String methodName,
                           Object[] arguments)
        This code is executed before the method is called.
        Specified by:
        beforeInvoke in interface Interceptor
        Parameters:
        object - receiver object for the method call
        methodName - name of the method to call
        arguments - arguments to the method call
        Returns:
        null relays this result.

      • afterInvoke

        public Object afterInvoke​(Object object,
                          String methodName,
                          Object[] arguments,
                          Object result)
        This code is executed after the method is called.
        Specified by:
        afterInvoke in interface Interceptor
        Parameters:
        object - receiver object for the called method
        methodName - name of the called method
        arguments - arguments to the called method
        result - result of the executed method call or result of beforeInvoke if method was not called
        Returns:
        result

      • doInvoke

        public boolean doInvoke()
        The call should be invoked separately
        Specified by:
        doInvoke in interface Interceptor
        Returns:
        true

      • statistic

        public List statistic()
        Returns benchmark statistics as a List<Object[]>. AccumulateTime is measured in milliseconds and is as accurate as System.currentTimeMillis() allows it to be.
        Returns:
        a list of lines, each item is [methodname, numberOfCalls, accumulatedTime]