Threads And ThreadPools
- Roger Cruz
Intro
My notes on C# threads
The Thread Class implements threads in C#
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Documentation
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Tips And Tidbits
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Threads can execute either in the foreground or in the background.
A background thread will terminate if all foreground threads in the process are finished.
Use the ThreadPool class to execute code on worker threads that are managed by the common language runtime.
Worker threads run in the background.
Setting the IsBackground property to TRUE at any time will cause thread to run in background.
The method/delegate to execute as a thread must be declared as
static(just like a program’s Main() method)
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The thread pool enables you to use threads more efficiently by providing your application with a pool of worker threads that are managed by the system
The thread pool uses background threads, which do not keep the application running if all foreground threads have terminated.
There is one thread pool per process.
A process can call the GetMaxThreads method to determine the number of threads.
The number of threads in the thread pool can be changed by using the SetMaxThreads method.
Each thread uses the default stack size and runs at the default priority.
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Examples
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DotNetFiddle example: https://dotnetfiddle.net/FwEzxA
using System;
using System.Threading;
public class Program
{
public static void Main()
{
Console.WriteLine("Main thread is starting...");
var thread1 = new Thread(SpawnedThread) { IsBackground = false};
thread1.Start();
Console.WriteLine("Main thread ({0}) exiting...",
Thread.CurrentThread.ManagedThreadId);
}
private static void SpawnedThread()
{
Console.WriteLine("Spawned thread ({0}) is now running in {1}",
Thread.CurrentThread.ManagedThreadId,
Thread.CurrentThread.IsBackground ? "background" : "foreground");
}
}