public void IsThreadSafe()
{
const int ThreadCount = 10;
// Start source threads.
SourceThread[] sources = new SourceThread[ThreadCount];
for (int i = 0; i < ThreadCount; i++)
{
sources[i] = new SourceThread();
sources[i].Start();
}
// Start target threads.
TargetThread[] targets = new TargetThread[ThreadCount];
for (int i = 0; i < ThreadCount; i++)
{
targets[i] = new TargetThread(sources);
targets[i].Start();
}
// Wait for all threads to finish.
for (int i = 0; i < ThreadCount; i++)
{
sources[i].Join();
targets[i].Join();
}
// All targets are in the correct state.
for (int i = 0; i < ThreadCount; i++)
{
Assert.AreEqual(ThreadCount * SourceThread.MaxValue, targets[i].Total);
}
}
public TargetThread(SourceThread[] sources)
{
_sources = sources;
_thread = new Thread(ThreadProc);
_total = new Dependent<int>(() => _sources.Sum(source => source.Value));
}