How to find what state ManualResetEvent is in?

.net multithreading locking
George Mauer picture George Mauer · Dec 23, 2008 · Viewed 18.9k times · Source

I am using an instance of ManualResetEvent to control thread access to a resource but I'm running into problems with it. Does anyone know how I can find out during debugging what the state of the object is?

That is to say I would like to know if the ManualResetEvent is currently blocking any threads and maybe even how many and which threads it is blocking.

Answer

Andrew Rollings picture Andrew Rollings · Dec 23, 2008

Perform a WaitOne on the event with a timeout value of zero.

It will return true if the event is set, or false if the timeout occurs. In other words, true -> event is set, false -> event is not set.

Related questions

Monitor vs lock

When is it appropriate to use either the Monitor class or the lock keyword for thread safety in C#? EDIT: It seems from the answers so far that lock is short hand for a series of calls to the Monitor …

Read More
When is ReaderWriterLockSlim better than a simple lock?

I'm doing a very silly benchmark on the ReaderWriterLock with this code, where reading happens 4x more often than writting: class Program { static void Main() { ISynchro[] test = { new Locked(), new RWLocked() }; Stopwatch sw = new Stopwatch(); foreach ( var isynchro in test ) { …

Read More
How expensive is the lock statement?

I've been experimenting with multi threading and parallel processing and I needed a counter to do some basic counting and statistic analysis of the speed of the processing. To avoid problems with concurrent use of my class I've used a …

Read More