/// <summary>
/// 结束运行 依次唤醒等待get结果的节点
/// </summary>
private void finishCompletion()
{
// assert state > COMPLETING;
for (WaitNode q; (q = waiters) != null;)
{
if (Interlocked.CompareExchange <WaitNode>(ref waiters, null, q) == q)
{
for (; ;)
{
Thread t = q.thread;
if (t != null)
{
q.thread = null;
LockSupport.unpark(t);
}
WaitNode next = q.next;
if (next == null)
{
break;
}
q.next = null; // unlink to help gc
q = next;
}
break;
}
}
done();
callable = null; // to reduce footprint
}
private int Poke()
{
int result = this._targetTicket.incrementAndGet();
LockSupport.unpark(_updatePullingThread);
return(result);
}
public override void Run()
{
while (!_closed)
{
if (_hasReadAhead || _eof)
{ // We have already read ahead, sleep a little
ParkAWhile();
}
else
{ // We haven't read ahead, or the data we read ahead have been consumed
try
{
if (!ReadAhead())
{
_eof = true;
}
_hasReadAhead = true;
LockSupport.unpark(_owner);
}
catch (IOException e)
{
_ioException = e;
_closed = true;
}
catch (Exception e)
{
_ioException = new IOException(e);
_closed = true;
}
}
}
}
/// <summary>
/// 唤醒下一个等待线程
/// </summary>
/// <param name="node"></param>
private void UnparkSuccessor(Node node)
{
int ws = node.WaitStatus;
if (ws < 0)
{
CompareAndSetWaitStatus(node, ws, 0);
}
Node s = node.Next;
//节点为null或者已经取消 则寻找下一个节点
if (s == null || s.WaitStatus > 0)
{
s = null;
//从后向前找最前面可以被唤醒的节点 不知道为什么不从前往后找
for (Node t = Tail; t != null && t != node; t = t.Prev)
{
if (t.WaitStatus <= 0)
{
s = t;
}
}
}
//唤醒该节点线程
if (s != null)
{
LockSupport.unpark(s.Thread);
}
}
private void UnparkEvictor()
{
if (_evictorParked)
{
_evictorParked = false;
LockSupport.unpark(_evictionThread);
}
}
private void UnparkSuccessor(Node waiters)
{
if (waiters.GetType() == typeof(Waiter))
{
Waiter waiter = ( Waiter )waiters;
waiter.State = WAITER_STATE_SUCCESSOR;
LockSupport.unpark(waiter.WaitingThread);
}
}
public override void Stop() // for removing throw declaration
{
if (_shutdownLatch == null)
{
return; // This SlaveUpdatePuller has already been shut down
}
Thread thread = _updatePullingThread;
_halted = true;
LockSupport.unpark(thread);
_shutdownLatch.await();
_shutdownLatch = null;
}
public override void Send(T @event)
{
AsyncEvent prev = _stackUpdater.getAndSet(this, @event);
Debug.Assert(prev != null);
@event.Next = prev;
if (prev == _endSentinel)
{
LockSupport.unpark(_backgroundThread);
}
else if (prev == _shutdownSentinel)
{
AsyncEvent events = _stackUpdater.getAndSet(this, _shutdownSentinel);
Process(events);
}
}
private void UnparkAll(Node waiters)
{
// If we find a node that is not a waiter, then it is either 'end' or 'released'. Looking at the type pointer
// is the cheapest way to make this check.
while (waiters.GetType() == typeof(Waiter))
{
Waiter waiter = ( Waiter )waiters;
waiter.State = WAITER_STATE_RELEASED;
LockSupport.unpark(waiter.WaitingThread);
Node next;
do
{
// Just like in isReleased, loop if the next pointer is null.
next = waiters.Next;
} while (next == null);
waiters = next;
}
}
public void shutdown()
{
_isRunnable = false;
LockSupport.unpark(_timerThread);
try {
long sleepTime = 200;
if (CurrentTime.isTest())
{
sleepTime = 1;
}
Thread.sleep(sleepTime);
} catch (Exception e) {
}
}
/// <summary>
/// Initiate the shut down process of this {@code AsyncEvents} instance.
/// <para>
/// This call does not block or otherwise wait for the background thread to terminate.
/// </para>
/// </summary>
public virtual void Shutdown()
{
Debug.Assert(!_shutdown, "Already shut down");
_shutdown = true;
LockSupport.unpark(_backgroundThread);
}
internal void EnqueueTask(ScheduledJobHandle newTasks)
{
_delayedTasks.offer(newTasks);
LockSupport.unpark(_timeKeeper);
}
public void Stop()
{
_stopped = true;
LockSupport.unpark(_timeKeeper);
}
internal virtual void Unpark()
{
LockSupport.unpark(Owner);
}
public virtual void signal()
{
LockSupport.unpark(consumer);
}
public override void Unpark(Thread thread)
{
LockSupport.unpark(thread);
}
public virtual void Unpark()
{
LockSupport.unpark(Thread);
}
protected internal virtual void PokeReader()
{
// wake up the reader... there's stuff to do, data to read
_hasReadAhead = false;
LockSupport.unpark(this);
}
