c# multithreading

++; Console.WriteLine ("Cumulative Failure"+ Wrongcount +"Times"); Console.WriteLine (ex. Message); Throw; } }); Console.read (); } }Run resultsOnly part of the data is written to the fileMultithreading using read-write locks to write files synchronouslyclassProgram {Static intWritecount =0; Static intWrongcount =0; Static voidMain (string[] args) {Test (); } static ReaderWriterLockSlim Writelock = new ReaderWriterLockSlim (); Stat

Multithreading Using System;Using System.Drawing;Using System.Collections;Using System.ComponentModel;Using System.Windows.Forms;Using System.Data; Using System.Threading; namespace student{Summary description of the Form1.public class Form1:System.Windows.Forms.Form{Private System.Windows.Forms.Button button1;Private System.Windows.Forms.Button button2;Private System.Windows.Forms.Button Button3; ArrayList threads = new ArrayList (); Private System.W

As you can see, in the above routine, synchronization is completed by waiting for monitor. Pulse. First, the producer produces a value, while the consumer is in the waiting state at the same time until it receives the "pulse" notification from the producer that production has been completed, and then the consumer enters the consumption state, the producer will call monitor after waiting for the consumer to complete the operation. the "pulse" emitted by pulese ". The execution result is simple:

In general, when invoking UI controls in multithreading, it involves modifying the UI across threads, using delegates, such as the following: this. Invoke ((methodinvoker)delegate { true; });However, if I close the form prematurely when the multithreaded operation is not completed, InvalidOperationException will be thrown, prompting "invoke or BeginInvoke cannot be invoked on the control

1. Start thread with thread startThreadStart represents a method of executing a threadThreadStart (Delegate () {}) public static void Testthread () {int max_thread_count = 10; Long Currentthreadcount = 0; for (var i = 0;i ThreadStart (method name) public static void Testthread () { int max_thread_count = 10; long currentthreadcount = 0; nbs P for (var i = 0;i 2. Use ThreadPool QueueUserWorkItem to perform

. Read-write locks are managed using ReaderWriterLockSlim objects as locks, and locking the same file in different ReaderWriterLockSlim objects is treated as a different lock. This difference may cause a concurrent write problem to the file again, so ReaderWriterLockSlim should be defined as a read-only static object. ReaderWriterLockSlim has several key methods, this article discusses only write locks: The call to the Enterwritelock method enters the write state and is blocked until the cal

1 Why multiple threads The first case is well understood, that is, in multiple CPUs, using multithreading can improve CPU usage. The second case is more common, on a single CPU single core computer, the use of multithreading technology, can also be responsible for IO processing in the process, human-computer interaction and the standing block to the dense calculation of the part of the execution of a dedica

The + + 0x standard will increase support for multithreading. All future compilers must follow the rules of multithreading in the new standard, which will bring great convenience to porting programs on different platforms. Let's take a look at the Std::thread class, which is responsible for managing the thread's execution process. Start thread We create an instance of the Std::thread class to start a new

I recently read the memcached source code and think that its libevent + multi-thread Server Model (Multi-reactor) is really good. I encapsulated this model into a C ++ class, according to my simple test, the efficiency of this model is really good. You are welcome to try it out. The usage of this class is very simple (the disadvantage is that it is not flexible). As long as a class is derived, rewrite the following virtual functions as needed: // Afte

One major new feature in the C ++ 0x standard is multi-threading support. prior to C ++ 0x, any multi-threading support in your c ++ compiler has been provided as an extension to the C ++ standard, which has meant that the details of that support varies between compilers and platforms. however, with the new standard, a

This article introduces the C # lock keyword. C # provides a keyword lock, which defines a piece of code as a mutex section ), A mutex can only be executed by one thread at a time, while other threads must wait.Each thread has its own resources, but the code zone is shared, that is, each thread can execute the same function. This may cause several threads to execute a function at the same time, resulting in

Introduction This article is designed to help experienced WIN32 programmers understand the differences and similarities between C + + 11-line threading and synchronization objects and Win32 threads and synchronization objects. In Win32, all synchronization object handles (HANDLE) are global handles. They can be shared, even replicated between processes. In C++11, all synchronization objects are stack (s

. This error is complete, and other threads have no chance to obtain the lock.Is it possible to use the C ++ feature to automatically handle this situation? Yes. Let's look at the following code, class CLock{ CRITICAL_SECTION cs;public: CLock(CRITICAL_SECTION lock):cs(lock){ EnterCriticalSection(cs); } ~CLock() { LeaveCriticalSection(cs); }}class Process{ CRITICAL_SECTION cs; /* other data */public: Process(){

; Return the value through the Result property. E.result = Areaobject2.calcarea (); } private void Backgroundworker1_runworkercompleted (object sender, System.ComponentModel.Run WorkercompletedeventargS e) {//Access the result through the result property. Double area = (double) e.result; MessageBox.Show ("The area is:" + area.tostring ()); } }}Demo code from MSDN:Click to open linkReference article: Click to open a link4, if it is not as good as the return

1. The difference between a single thread and multiple threads and the advantages of multiple threads When a single-threaded program is executed, the program path (processing items) runs in a continuous order and must be processed first, and then painted later.Multithreading. For example, a program can execute more than two identical operations at the same time, such as multiple-threaded software that searches for proxies or sends emails in a group, because an operation takes a long time to retu

long as this thread does not return, the main thread will never respond. Even if the new thread does not use an infinite loop, it can return. The use of multithreading in this way also loses its original meaning. Now let's take a look at the recommended solution: Public partial class form1: Form{Private delegate void flushclient (); // proxyPublic form1 (){Initializecomponent ();}Private void form1_load (Object sender, eventargs E){Thread thread = ne

When I first came into contact with the concept of "Thread", I thought it was difficult to understand. I read many books and it took a long time to understand its true meaning. Now I will describe the "multithreading" that I understand as a beginner. This is a seriesArticleTo demonstrate the basic concepts related to threads. Hope to help beginners. The language is relatively refined and needs to be read repeatedly in some places. Chapter 2 multi-th

the main control thread, and it achieves the control of the main thread. As long as this thread does not return, the main thread will never respond. Even if the new thread does not use an infinite loop, it can return. The use of multithreading in this way also loses its original meaning. Now let's take a look at the recommended solution. Private delegate void flushclient (); // proxy private void crossthreadflush () {While (true) {// place slee

, bytes. length); While (readsize> 0) {savestream. write (bytes, 0, readsize); readsize = stream. read (bytes, 0, bytes. length);} SW. stop (); MessageBox. show ("download time:" + SW. elapsed. tostring (), "prompt");} catch (exception ex) {MessageBox. show (ex. message, "error");} finally {savestream. close ();}} In this way, the thread pool thread is used to simply download files from the client on the server, and the thread pool thread is not used as the main thread. As a result, the interfa

Recently, I encountered a problem where every element of an array needs to be operated on the thread, using the followingCode: Private void foreachthread (INT [] ARR){Foreach (int A in ARR){New thread (delegate () {console. writeline ("Fe:" + a) ;}). Start ();}}Some of the results are not output, but some are output repeatedly.The code is changed to the following: Private void forthread (INT [] ARR){For (INT I = 0, Len = arr. length; I {Int A = arr [I];New thread (delegate () {console. writel