public void MutextBasicSync()
{
int entered = 0;
SlimMutex mutex = new SlimMutex();
Action waiter = () =>
{
using (mutex.Enter())
{
Verify.True(mutex.IsEntered, "The mutex does not report being entered.");
Interlocked.Increment(ref entered);
Verify.Equal(1, entered);
// simulate workload
Thread.Sleep(TimeSpan.FromMilliseconds(1));
Verify.Equal(1, entered);
Interlocked.Decrement(ref entered);
Verify.Equal(0, entered);
}
};
var tasks = new Task[Parallelism];
for (int i = 0; i < tasks.Length; i++)
{
tasks[i] = Task.Run(waiter);
Thread.Sleep(0);
}
Task.WaitAll(tasks);
}
public void MutextTimedSync()
{
SlimMutex mutex = new SlimMutex();
bool firstEntered = false;
bool secondEntered = false;
bool success = true;
object signal = new object();
Action first = () =>
{
using (mutex.Enter())
{
lock (signal)
{
firstEntered = true;
Monitor.PulseAll(signal);
while (!secondEntered)
{
Monitor.Wait(signal);
}
}
};
};
Action second = () =>
{
using (mutex.TryEnter(TimeSpan.FromMilliseconds(10), out success))
{
lock (signal)
{
secondEntered = true;
Monitor.PulseAll(signal);
}
}
};
Task[] tasks = new Task[2];
tasks[0] = Task.Run(first);
lock (signal)
{
while (!firstEntered)
{
Monitor.Wait(signal);
}
}
tasks[1] = Task.Run(second);
Task.WaitAll(tasks);
Verify.False(success, "Mutex was double entered.");
Verify.True(firstEntered, "Mutex wasn't entered the first time.");
Verify.True(secondEntered, "Mutext wasn't entered the second time");
}