why System.Threading.WaitHandle.WaitOne()
hasn't overload for the timeout parameters as available in standard .NET implementation: http://msdn.microsoft.com/en-us/library/cc189907(v=vs.110).aspx
It's very useful in working threads when, during thread sleep, thread is requested to stop from Main UI thread.. Other ways to implement it?
Example:
public void StartBatteryAnimation()
{
whStopThread = new ManualResetEvent(false);
batteryAnimationThread = new Thread(new ThreadStart(BatteryAnimation_Callback));
batteryAnimationThread.Start();
}
public void StopBatteryAnimation()
{
whStopThread.Set();
batteryAnimationThread.Join();
batteryAnimationThread = null;
whStopThread.Dispose();
whStopThread = null;
}
public void BatteryAnimation_Callback()
{
bool exitResult = false;
while (true)
{
// Do some stuff
exitResult = whStopThread.WaitOne(WAIT_INTERVALL);
if (exitResult) break;
}
}
Thanks Frank for your (1000th!!) reply.
So my custom implementation for WaitHandle.WaitOne(int Timeout)
has been:
private Thread batteryAnimationThread = null;
private Semaphore batteryAnimationSemaphore = null;
public void StartBatteryAnimation()
{
batteryAnimationSemaphore = new Semaphore(1);
batteryAnimationSemaphore.Acquire();
batteryAnimationThread = new Thread(new ThreadStart(BatteryAnimation_Callback));
batteryAnimationThread.Start();
}
public void StopBatteryAnimation()
{
batteryAnimationSemaphore.Release();
batteryAnimationThread.Join();
batteryAnimationThread = null;
batteryAnimationSemaphore = null;
}
public void BatteryAnimation_Callback()
{
bool stopThread = false;
try
{
while (true)
{
// Do some stuff..
stopThread = batteryAnimationSemaphore.TryAcquire(1, BATTERY_ANIMATION_INTERVALL, Java.Util.Concurrent.TimeUnit.MILLISECONDS);
if (stopThread) break;
}
catch (Exception ex)
{
}
batteryAnimationSemaphore.Release();
}
Is this the right way for?
Thanks
This one hasn't been implemented yet. You may use semaphore.tryAcquire
instead.
Background: Due to its design, dot42 supports the entire Android API (C# classes are proxies and generated from the android.jar). But is supports only part of the .NET API because the .NET classes are handcrafted on top of the Android/Java API.
Related question: Java Equivalent of .NET's ManualResetEvent and WaitHandle
UPDATE
We released the API under Apache License 2.0 so anyone may contribute now. I also logged an issue.