Examples of org.springframework.util.StopWatch

org.springframework.util.StopWatch
Simple stop watch, allowing for timing of a number of tasks, exposing total running time and running time for each named task.
Conceals use of System.currentTimeMillis(), improving the readability of application code and reducing the likelihood of calculation errors.
Note that this object is not designed to be thread-safe and does not use synchronization.
This class is normally used to verify performance during proof-of-concepts and in development, rather than as part of production applications. @author Rod Johnson @author Juergen Hoeller @author Sam Brannen @since May 2, 2001

    }


    private static void displayInfo(ReplacementTarget target) {
        System.out.println(target.formatMessage("Hello World!"));


        StopWatch stopWatch = new StopWatch();
        stopWatch.start("perfTest");


        for (int x = 0; x < 1000000; x++) {
            String out = target.formatMessage("foo");
        }


        stopWatch.stop();


        System.out.println("1000000 invocations took: "
                + stopWatch.getTotalTimeMillis() + " ms");
    }

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 */
public class ProfilingInterceptor implements MethodInterceptor {


    public Object invoke(MethodInvocation invocation) throws Throwable {
        // start the stop watch
        StopWatch sw = new StopWatch();
        sw.start(invocation.getMethod().getName());


        Object returnValue = invocation.proceed();


        sw.stop();
        dumpInfo(invocation, sw.getTotalTimeMillis());
        return returnValue;
    }

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   * @see #setExitMessage
   * @see #setExceptionMessage
   */
  protected Object invokeUnderTrace(MethodInvocation invocation, Log logger) throws Throwable {
    String name = invocation.getMethod().getDeclaringClass().getName() + "." + invocation.getMethod().getName();
    StopWatch stopWatch = new StopWatch(name);
    Object returnValue = null;
    boolean exitThroughException = false;
    try {
      stopWatch.start(name);
      writeToLog(logger,
          replacePlaceholders(this.enterMessage, invocation, null, null, -1));
      returnValue = invocation.proceed();
      return returnValue;
    }
    catch (Throwable ex) {
      if(stopWatch.isRunning()) {
        stopWatch.stop();
      }
      exitThroughException = true;
      writeToLog(logger,
          replacePlaceholders(this.exceptionMessage, invocation, null, ex, stopWatch.getTotalTimeMillis()), ex);
      throw ex;
    }
    finally {
      if (!exitThroughException) {
        if(stopWatch.isRunning()) {
          stopWatch.stop();
        }
        writeToLog(logger,
            replacePlaceholders(this.exitMessage, invocation, returnValue, null, stopWatch.getTotalTimeMillis()));
      }
    }
  }

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  }




  protected Object invokeUnderTrace(MethodInvocation invocation, Log logger) throws Throwable {
    String name = createInvocationTraceName(invocation);
    StopWatch stopWatch = new StopWatch(name);
    stopWatch.start(name);
    try {
      return invocation.proceed();
    }
    finally {
      stopWatch.stop();
      logger.trace(stopWatch.shortSummary());
    }
  }

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    }


    PrimitiveArrayBean tb = new PrimitiveArrayBean();
    BeanWrapper bw = new BeanWrapperImpl(tb);
    int[] input = new int[1024];
    StopWatch sw = new StopWatch();
    sw.start("array1");
    for (int i = 0; i < 1000; i++) {
      bw.setPropertyValue("array", input);
    }
    sw.stop();
    assertEquals(1024, tb.getArray().length);
    assertEquals(0, tb.getArray()[0]);
    long time1 = sw.getLastTaskTimeMillis();
    assertTrue("Took too long", sw.getLastTaskTimeMillis() < 100);


    bw.registerCustomEditor(String.class, new StringTrimmerEditor(false));
    sw.start("array2");
    for (int i = 0; i < 1000; i++) {
      bw.setPropertyValue("array", input);
    }
    sw.stop();
    assertTrue("Took too long", sw.getLastTaskTimeMillis() < 100);


    bw.registerCustomEditor(int.class, "array.somePath", new CustomNumberEditor(Integer.class, false));
    sw.start("array3");
    for (int i = 0; i < 1000; i++) {
      bw.setPropertyValue("array", input);
    }
    sw.stop();
    assertTrue("Took too long", sw.getLastTaskTimeMillis() < 100);


    bw.registerCustomEditor(int.class, "array[0].somePath", new CustomNumberEditor(Integer.class, false));
    sw.start("array3");
    for (int i = 0; i < 1000; i++) {
      bw.setPropertyValue("array", input);
    }
    sw.stop();
    assertTrue("Took too long", sw.getLastTaskTimeMillis() < 100);


    bw.registerCustomEditor(int.class, new CustomNumberEditor(Integer.class, false));
    sw.start("array4");
    for (int i = 0; i < 100; i++) {
      bw.setPropertyValue("array", input);
    }
    sw.stop();
    assertEquals(1024, tb.getArray().length);
    assertEquals(0, tb.getArray()[0]);
    assertTrue("Took too long", sw.getLastTaskTimeMillis() > time1);
  }

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    }
    DefaultListableBeanFactory lbf = new DefaultListableBeanFactory();
    RootBeanDefinition rbd = new RootBeanDefinition(TestBean.class);
    rbd.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
    lbf.registerBeanDefinition("test", rbd);
    StopWatch sw = new StopWatch();
    sw.start("prototype");
    for (int i = 0; i < 100000; i++) {
      lbf.getBean("test");
    }
    sw.stop();
    // System.out.println(sw.getTotalTimeMillis());
    assertTrue("Prototype creation took too long: " + sw.getTotalTimeMillis(), sw.getTotalTimeMillis() < 3000);
  }

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    RootBeanDefinition rbd = new RootBeanDefinition(LifecycleBean.class);
    rbd.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
    rbd.setDependencyCheck(RootBeanDefinition.DEPENDENCY_CHECK_OBJECTS);
    lbf.registerBeanDefinition("test", rbd);
    lbf.addBeanPostProcessor(new LifecycleBean.PostProcessor());
    StopWatch sw = new StopWatch();
    sw.start("prototype");
    for (int i = 0; i < 100000; i++) {
      lbf.getBean("test");
    }
    sw.stop();
    // System.out.println(sw.getTotalTimeMillis());
    assertTrue("Prototype creation took too long: " + sw.getTotalTimeMillis(), sw.getTotalTimeMillis() < 3000);
  }

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    RootBeanDefinition rbd = new RootBeanDefinition(TestBean.class);
    rbd.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
    rbd.getConstructorArgumentValues().addGenericArgumentValue("juergen");
    rbd.getConstructorArgumentValues().addGenericArgumentValue("99");
    lbf.registerBeanDefinition("test", rbd);
    StopWatch sw = new StopWatch();
    sw.start("prototype");
    for (int i = 0; i < 100000; i++) {
      TestBean tb = (TestBean) lbf.getBean("test");
      assertEquals("juergen", tb.getName());
      assertEquals(99, tb.getAge());
    }
    sw.stop();
    // System.out.println(sw.getTotalTimeMillis());
    assertTrue("Prototype creation took too long: " + sw.getTotalTimeMillis(), sw.getTotalTimeMillis() < 3000);
  }

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    rbd.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
    rbd.getConstructorArgumentValues().addGenericArgumentValue(new RuntimeBeanReference("spouse"));
    lbf.registerBeanDefinition("test", rbd);
    lbf.registerBeanDefinition("spouse", new RootBeanDefinition(TestBean.class));
    TestBean spouse = (TestBean) lbf.getBean("spouse");
    StopWatch sw = new StopWatch();
    sw.start("prototype");
    for (int i = 0; i < 100000; i++) {
      TestBean tb = (TestBean) lbf.getBean("test");
      assertSame(spouse, tb.getSpouse());
    }
    sw.stop();
    // System.out.println(sw.getTotalTimeMillis());
    assertTrue("Prototype creation took too long: " + sw.getTotalTimeMillis(), sw.getTotalTimeMillis() < 4000);
  }

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    RootBeanDefinition rbd = new RootBeanDefinition(TestBean.class);
    rbd.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
    rbd.getPropertyValues().addPropertyValue("name", "juergen");
    rbd.getPropertyValues().addPropertyValue("age", "99");
    lbf.registerBeanDefinition("test", rbd);
    StopWatch sw = new StopWatch();
    sw.start("prototype");
    for (int i = 0; i < 100000; i++) {
      TestBean tb = (TestBean) lbf.getBean("test");
      assertEquals("juergen", tb.getName());
      assertEquals(99, tb.getAge());
    }
    sw.stop();
    // System.out.println(sw.getTotalTimeMillis());
    assertTrue("Prototype creation took too long: " + sw.getTotalTimeMillis(), sw.getTotalTimeMillis() < 3000);
  }

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