boxing stopwatch

the stack inevitably has some impact on the system performance.As a result, two words turned out: The process of converting data from a value type to a reference type is called boxing , and the process of converting from a reference type to a value type is "unboxing."If you compile the above code and view it in ILDASM(An IL anti-compilation Tool), you will find out what boxing and unboxing are like in the

the above code and view it in ILDASM(An IL anti-compilation Tool), you will find out what boxing and unboxing are like in the IL code. The IL code generated after the sample code is compiled is shown.Seven, packing and unpacking performance issuesIn order to figure out what the performance impact of boxing and unpacking will be, we cycle through the two function methods shown in 10,000 times respectively.

question one: the last few days to write the actual application of parallel computing-the Address book, the use of stopwatch to time, found that the timing is the real timing.Stopwatch Stopwatch =NewStopwatch (); TimeSpan TimeSpan; Doubletime1,time2; Stopwatch. Start (); F1 ();//Take time T1stopwatch. Stop (); TimeSpan=

1. Use Stopwatch class (System.Diagnostics.Stopwatch)Stopwatch instances can measure the elapsed time of a single time interval, or they can measure the total elapsed time of multiple time intervals. In a typical Stopwatch scenario, call the Start method, then call the Stop method, and finally use the Elapsed property to check the run time. The

--- Restore content start --- The first is the description of miniproject: Combin text drawing in canvas with time to build digital stopwatch. tenths of a second-second has a decimal point 3 buttons "start" "Stop" "reset" 1. interval: 0.1 s --- creat_timer parameter interval in milliseconds, 0.1 seconds = Ms. use int instead of float2.event handler function for canvas draws current time event handler to display the current time in the middle of the

The running speed of the software must be within the acceptable range of the user. Generally, improving the speed of those short but frequently used routines can significantly improve the overall speed of the software. To improve speed, of course, we must first be able to measure time. OK, so let's think about the situation on the runway, the sound of the gunshot, immediately press the stopwatch to start the time, the player reached the end of the mo

1 Overview You need to record the execution time of each task, or record a period of code execution, simply by printing the difference between the current time and the execution time, and if performing a large number of tests is cumbersome and not intuitive. If you want to control the execution time further, you need to modify it in many parts of the program. Spring-framework provides a stopwatch class that can do similar task execution time contro

Use cadisplaylink to write stopwatch Effect: Source code: Stopwatch. h and Stopwatch. m //// Stopwatch. h // Showtime /// created by youxianming on 14-10-16. // copyright (c) 2014 youxianming. all rights reserved. // # import //// Stopwatch. M // Showtime /// created by y

called boxing, and moving from a reference type to a value type is called unpacking.Figure 8 Packing and unpacking process schematicIf you compile the above code in the same ildasm, you will see how the code in IL is boxed and unboxing, as shown in.Figure 9 Packing and unpackingPerformance impact of boxing and unpackingTo see the impact of the performance, we ran the following two functions 1000 times, as

The shell of the stopwatch is metal, the texture part of the production is more troublesome. At the same time different parts of the production method is different. The ring section can be textured with a layer style, and the key part needs to be made with a metal gradient. Final effect 1, a new 800 * 600 pixel file, background filled with black. Create a new group, and use the elliptical marquee tool to pull out the positive circle se

This example describes the stopwatch timer implemented by Android. Share to everyone for your reference, specific as follows: Package com.liu.time; Import Java.util.Timer; Import Java.util.TimerTask; Import android.app.Activity; Import Android.app.AlertDialog; Import Android.content.Context; Import Android.content.DialogInterface; Import android.content.SharedPreferences; Import Android.os.Bundle; Import Android.os.Handler; Import Android.os.Mes

This article introduces the JavaScript implementation of simple stopwatch walking clock effects. Share to everyone for your reference. Specifically as follows:The operation effect chart is as follows: Implementation code: I hope this article will help you with your JavaScript programming.

In C #, DateTime is typically used to represent the current time, and you can use a DateTime object to get the current time before and after an operation, and then subtract two DateTime objects to get the time difference (TimeSpan object), so that this operation takes a lot longer.However, in some cases, a loop fetch is required to perform an operation, and this operation may not take much time, but the time spent is still considerable when the magnitude of the loop is large. It would be trouble

Sometimes js is required to write some functions for testing. If the test execution time is required, a stopwatch may be required: StopWatch class: Function stopWatch () {} stopWatch. prototype. start = function () {this. startD = new Date (); return this ;}; stopWatch

Stopwatch + C # log printing method, It is easy to print the running time of an interface and method in a program. Now, I will share a method for temporarily printing logs I use at work and how to use Stopwatch printing to measure the running time at a certain interval. The Stopwatch instance can measure the running time of a time interval. The following example

A class in the System. Diagnostics namespace. In fact, it is equivalent to a stopwatch. It can be stopped more than once. The Start method is to press the stopwatch to Start timing. The Stop method is to press the stopwatch again to pause timing. The IsRunning attribute is used to determine whether the stopwatch is run

Part 3 of BOM series: timer application (clock, countdown, stopwatch, and alarm), Part 3 of bom Clock The simplest way to create a clock is to extract the time part of the time object string using the exec () method of the regular expression. Use the timer to refresh it. Countdown [1] Simple countdown The simple countdown is to use setInterval to subtract 1 from the set time every 1 s. [2] precise countdown Based on the timer running mechanism, we

When you do the project, you need to output the database operation time-consuming, wrote a method. When the boss saw it, I wondered why I didn't have to. Only to know that there are stopwatch this class.Properties name description Elapsed Gets the total elapsed time measured by the current instance. Elapsedmilliseconds Gets the total elapsed time, in milliseconds, measured by t

We often needCodeConfirms the execution efficiency of a method. For example, we have the following method: Static void run (){For (INT I = 0; I {Console. Write (I );Thread. Sleep (5 );}} We want to know how much time it takes to execute this method. The traditional method is to record the current time before the method is executed, and then record another time at the end, and then let them subtract it, like the following: Datetime starttime = datetime. now;Run ();Timespan span = datetim

Stopwatch provides several methods to control the stopwatch object. The start method starts a timing operation, and the Stop method stops timing. If the start method is used for the second time, the timing continues, and the final result is the accumulation of the two times. To avoid this, use the reset method to zero the object before the second timer. No parameters are required for these three methods. N