/// <summary>
/// Attempts to lock the gate. The action is run once the gate becomes free.
/// Queued actions are run in order.
/// </summary>
public virtual void TryLock(IAction onAvailable, Needle needle = null, bool autoUnlock = true)
{
// replace action to unlock once task has run
if (autoUnlock)
{
onAvailable = new ActionPair(onAvailable, Release);
}
// try get the lock
if (TryTake)
{
// replace needle reference if needed
if (needle == null)
{
ManagerUpdate.Control.AddSingle(onAvailable);
}
else
{
needle.AddSingle(onAvailable);
}
return;
}
// add to queue
_queue.Enqueue(new Act(onAvailable));
}
/// <summary>
/// Attempts to lock the gate. The action is run once the gate becomes free.
/// Queued actions are run in order.
/// </summary>
public override void TryLock(IAction onAvailable, Needle needle = null, bool autoUnlock = true)
{
// try get the lock
if (TryTake)
{
// run the on lock method if set
if (OnLock != null)
{
OnLock.Run();
}
if (needle == null)
{
needle = ManagerUpdate.Control;
}
// replace action to unlock once task has run
if (autoUnlock)
{
needle.AddSingle(new ActionPair(onAvailable, Release));
}
else
{
// run on lock function
needle.AddSingle(onAvailable);
}
return;
}
if (autoUnlock)
{
// set an action to unlock once task has run and add the task to the queue
_queue.Enqueue(new Act(new ActionPair(onAvailable, Release), needle));
}
else
{
// add the on available task
_queue.Enqueue(new Act(onAvailable, needle));
}
}
/// <summary>
/// Method that receives the send delegate and executes it on a thread synchronously.
/// </summary>
public override void Send(SendOrPostCallback d, object state)
{
// set the current context
//SynchronizationContext.SetSynchronizationContext(_needle.Context);
// create an action that will be run safely on the needle
ActionTryCatch action = new ActionTryCatch(ActionSet.New(Run, d, state));
// have the delegate run on the needle and wait for it to complete
_needle.AddSingle(action);
// wait while the action has not run
while (!action.Ran)
{
Thread.Sleep(1);
}
// the action is complete - was there an exception?
if (action.Exception != null)
{
// yes, rethrow
throw action.Exception;
}
}
