read data from usb barcode scanner c# Multithreaded Programming in Visual C#.NET

Printer QR Code 2d barcode in Visual C#.NET Multithreaded Programming

Multithreaded Programming
QR Code Creation In C#.NET
Using Barcode generation for .NET framework Control to generate, create Denso QR Bar Code image in .NET applications.
Denso QR Bar Code Recognizer In C#.NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in .NET applications.
lock(lockOn) { // lock the entire method sum = 0; // reset sum for(int i=0; i < numsLength; i++) { sum += nums[i]; ConsoleWriteLine("Running total for " + ThreadCurrentThreadName + " is " + sum); ThreadSleep(10); // allow task-switch } return sum; }
Bar Code Creation In Visual C#.NET
Using Barcode creation for VS .NET Control to generate, create barcode image in .NET framework applications.
Barcode Recognizer In Visual C#
Using Barcode decoder for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
PART II
Quick Response Code Maker In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create QR Code 2d barcode image in ASP.NET applications.
QR Code ISO/IEC18004 Generation In Visual Studio .NET
Using Barcode creation for .NET framework Control to generate, create QR Code image in Visual Studio .NET applications.
} } class MyThread { public Thread Thrd; int[] a; int answer; // Create one SumArray object for all instances of MyThread static SumArray sa = new SumArray(); // Construct a new thread public MyThread(string name, int[] nums) { a = nums; Thrd = new Thread(thisRun); ThrdName = name; ThrdStart(); // start the thread } // Begin execution of new thread void Run() { ConsoleWriteLine(ThrdName + " starting"); answer = saSumIt(a); ConsoleWriteLine("Sum for " + ThrdName + " is " + answer); ConsoleWriteLine(ThrdName + " terminating"); } } class Sync { static void Main() { int[] a = {1, 2, 3, 4, 5}; MyThread mt1 = new MyThread("Child #1", a); MyThread mt2 = new MyThread("Child #2", a); mt1ThrdJoin(); mt2ThrdJoin(); } }
Print Denso QR Bar Code In Visual Basic .NET
Using Barcode encoder for VS .NET Control to generate, create QR Code JIS X 0510 image in .NET applications.
Create Bar Code In C#.NET
Using Barcode drawer for Visual Studio .NET Control to generate, create bar code image in .NET applications.
Part II:
2D Barcode Printer In Visual C#
Using Barcode creation for .NET framework Control to generate, create Matrix Barcode image in .NET applications.
GTIN - 13 Printer In Visual C#
Using Barcode printer for VS .NET Control to generate, create EAN-13 Supplement 5 image in .NET applications.
Exploring the C# Library
Bar Code Encoder In Visual C#
Using Barcode generation for .NET Control to generate, create bar code image in Visual Studio .NET applications.
Make EAN-8 In C#.NET
Using Barcode encoder for Visual Studio .NET Control to generate, create EAN-8 image in .NET applications.
Here is sample output from the program (The actual output you see may vary slightly)
DataMatrix Reader In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
Painting Bar Code In None
Using Barcode encoder for Software Control to generate, create bar code image in Software applications.
Child #1 starting Running total for Child Child #2 starting Running total for Child Running total for Child Running total for Child Running total for Child Running total for Child Sum for Child #1 is 15 Child #1 terminating Running total for Child Running total for Child Running total for Child Running total for Child Sum for Child #2 is 15 Child #2 terminating #1 is 1 #1 #1 #1 #1 #2 is is is is is 3 6 10 15 1
Scanning Bar Code In VS .NET
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
Bar Code Reader In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
#2 #2 #2 #2
DataMatrix Creator In Objective-C
Using Barcode drawer for iPad Control to generate, create Data Matrix image in iPad applications.
Bar Code Maker In VS .NET
Using Barcode creator for Reporting Service Control to generate, create bar code image in Reporting Service applications.
is is is is
Printing UPC-A Supplement 2 In .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create UPCA image in VS .NET applications.
EAN / UCC - 13 Creator In .NET
Using Barcode maker for Reporting Service Control to generate, create EAN-13 Supplement 5 image in Reporting Service applications.
3 6 10 15
As the output shows, both threads compute the proper sum of 15 Let s examine this program in detail The program creates three classes The first is SumArray It defines the method SumIt( ), which sums an integer array The second class is MyThread, which uses a static object called sa that is of type SumArray Thus, only one object of SumArray is shared by all objects of type MyThread This object is used to obtain the sum of an integer array Notice that SumArray stores the running total in a field called sum Thus, if two threads use SumIt( ) concurrently, both will be attempting to use sum to hold the running total Because this will cause errors, access to SumIt( ) must be synchronized Finally, the class Sync creates two threads and has them compute the sum of an integer array Inside SumIt( ), the lock statement prevents simultaneous use of the method by different threads Notice that lock uses lockOn as the object being synchronized This is a private object that is used solely for synchronization Sleep( ) is called to purposely allow a task-switch to occur, if one can but it can t in this case Because the code within SumIt( ) is locked, it can be used by only one thread at a time Thus, when the second child thread begins execution, it does not enter SumIt( ) until after the first child thread is done with it This ensures the correct result is produced To understand the effects of lock fully, try removing it from the body of SumIt( ) After doing this, SumIt( ) is no longer synchronized, and any number of threads can use it concurrently on the same object The problem with this is that the running total is stored in sum, which will be changed by each thread that calls SumIt( ) Thus, when two threads call SumIt( ) at the same time on the same object, incorrect results are produced because sum reflects the summation of both threads, mixed together For example, here is sample output from the program after lock has been removed from SumIt( ):
Child #1 starting Running total for Child Child #2 starting Running total for Child Running total for Child Running total for Child Running total for Child Running total for Child #1 is 1 #2 #1 #2 #1 #2 is is is is is 1 3 5 8 11
23:
Copyright © OnBarcode.com . All rights reserved.