bool Pick(out SingleThreadedExecutor executor)
{
var x = Volatile.Read(ref executors);
if (x == ShutdownPool)
{
executor = null;
return(false);
}
int idx = n;
executor = x[idx];
idx++;
n = idx == parallelism ? 0 : idx;
return(true);
}
public void Start()
{
SingleThreadedExecutor ys = null;
for (;;)
{
var xs = Volatile.Read(ref executor);
if (xs != null)
{
break;
}
if (ys == null)
{
ys = new SingleThreadedExecutor(name + "-" + (Interlocked.Increment(ref index)));
}
if (Interlocked.CompareExchange(ref executor, ys, xs) == xs)
{
break;
}
}
}
public void Start()
{
SingleThreadedExecutor[] ys = null;;
for (;;)
{
var xs = Volatile.Read(ref executors);
if (xs != ShutdownPool)
{
break;
}
if (ys == null)
{
ys = new SingleThreadedExecutor[parallelism];
for (int i = 0; i < ys.Length; i++)
{
ys[i] = new SingleThreadedExecutor(name + "-" + (i + 1));
}
}
if (Interlocked.CompareExchange(ref executors, ys, ShutdownPool) == ShutdownPool)
{
break;
}
}
}
internal SingleExecutorWorker(SingleThreadedExecutor executor, Action <SingleThreadedExecutor> onShutdown = null)
{
this.executor = executor;
this.onShutdown = onShutdown;
this.tasks = new HashSet <InterruptibleAction>();
}
internal SingleExecutorService(string name = "SingleExecutorWorker")
{
this.name = name;
executor = new SingleThreadedExecutor(name);
}