okay so I have an app that updates it's status every second to run tests and grab information from various files/places on a system. My app works great but I get a funny error from time to time: System.InvalidO perationExcepti on "object is being used" (or something similar).
every second a timer sets off an event. this event creates a thread to run the tests as to not freeze the GUI. However before the test is run, it fetches a static boolean that says whether a thread like this is already running or not. if the bool returns true then the thread is not initialized.
here is the code for the timer event: - private void scheduler_event(object source, System.Timers.ElapsedEventArgs e)
-
{
-
DateTime static_time_now = DateTime.Now;
-
bool pre_busy = constants.busy;
-
constants.busy = true;
-
-
if (constants.firstrun == true)
-
{
-
constants.firstrun = false;
-
constants.busystatus = new bool[] { false, false, false };
-
constants.updatestatus = new bool[] { true, true, true };
-
Thread firstrunthread = new Thread(firstrun);
-
firstrunthread.Start();
-
}
-
-
if (pre_busy == false)//when program is fired up, prebusy is set to false
-
{
-
constants.updatestatus[0] = ((constants.next_sysinfo <= static_time_now) && (constants.busystatus[0] == false));
-
constants.updatestatus[1] = ((constants.next_drive <= static_time_now) && (constants.busystatus[1] == false));
-
constants.updatestatus[2] = ((constants.next_eventlog <= static_time_now) && (constants.busystatus[2] == false));
-
-
Thread runthread = new Thread(run);
-
runthread.Start();
-
}
-
-
}
constants is an abstract class with static methods I use as global values.
now in my run code, once the test has finished, I set
can this be the problem? If yes, how do I get rid of it?
3  1094 
I am also new to the C# world, but I am writing a similar app.
What I've done is created a thread with a loop in it. This way you do not have to worry about multiples threads colliding. -
public void threadMethod()
-
{
-
//Init Code - Things to happen only on the first run.
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Thread.Sleep(1000);
-
//Now the loop
-
while (condition)
-
{
-
// Get Stats
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Thread.Sleep(1000);
-
-
}
-
}
-
yes but this will freeze my Gui, especially when I call Perl scripts in my testing that take 10 minutes to complete.
I found the answer to my question:
I lock my whole constants class (this is the class with my static methods/variables) whenever I change busy.
so instead of:
I have: - lock(constants){
-
{
-
constants.busy = false;
-
}
-
}
app running for 48 hours and no problems... looking good!
Great!
I see what you mean now. I wasn't sure how long it would take to process your requests.
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