How to wait for a boolean without looping (using any kind of wait / semaphore / event / mutex, etc)

c# .net multithreading mutex semaphore
Ignacio Soler Garcia picture Ignacio Soler Garcia · Sep 13, 2012 · Viewed 30.9k times · Source

I need to stop a thread until another thread sets a boolean value and I don't want to share between them an event.

What I currently have is the following code using a Sleep (and that's the code I want to change):

while (!_engine.IsReadyToStop())
{
    System.Threading.Thread.Sleep(Properties.Settings.Default.IntervalForCheckingEngine); 
}

Any ideas?

EDIT TO CLARIFY THINGS:

There is an object called _engine of a class that I don't own. I cannot modify it, that's why I don't want to share an event between them. I need to wait until a method of that class returns true.

Answer

MoonStom picture MoonStom · Dec 12, 2015

SpinWait.SpinUntil is the right answer, regardless where you're gonna place this code. SpinUntil offers "a nice mix of spinning, yielding, and sleeping in between invocations".

Related questions

Object synchronization method was called from an unsynchronized block of code. Exception on Mutex.Release()

I have found different articles about this exception but none of them was my case. Here is the source code: class Program { private static Mutex mutex; private static bool mutexIsLocked = false; static void Main(string[] args) { ICrmService crmService = new ArmenianSoftware.…

Read More
Should a return statement be inside or outside a lock?

I just realized that in some place in my code I have the return statement inside the lock and sometime outside. Which one is the best? 1) void example() { lock (mutex) { //... } return myData; } 2) void example() { lock (mutex) { //... return myData; } } Which one …

Read More
How do I update the GUI from another thread?

Which is the simplest way to update a Label from another Thread? I have a Form running on thread1, and from that I'm starting another thread (thread2). While thread2 is processing some files I would like to update a Label …

Read More