I have two threads t1 and t2. I get information in t1 and based on it I want to call function in t2 which will work in t2. How can I do it?
t2 is thread with c# form. t1 is working in a loop and it gets information that t2 should call function. I think that shared objects won't work, because t2 doesn't work in a loop, so I can't check if some object has changed.
Share the object between both threads (for example a member of a class where both threads run) and access it using the lock pattern:
object _someobject; // as a member for example ... lock (_someobject) { // manipulate the object } This ensures object consistency with avoiding both threads interacting with the shared object at the same time.
Another option would be to use a MethodInvoker if one of the threads is a GUI thread for example.
I believe the proper way would be to use Invoke or BeginInvoke. You call it on t1, and it gets executed on t2. You need to have a reference to some control running in t2, e.g., the form itself.
You can include the data into the closure, which you invoke in t2.
I envision using a volatile variable to store the information found by t1 while t2 loops using an exception until the desired informaiton is found. But I could be wrong.
You would use Monitor.Wait and Pulse. They will share a locking object and a signalling variable. The waiting thread would be blocked until signaled (pulsed by working thread). e.g:
bool _go; lock (_locker) { while (!_go) Monitor.Wait(_locker); } CallFunc(); Working thread:
// do work here DoWork(); lock (_locker) { _go = true; Monitor.PulseAll(_locker); } 
Waits there.