/// <summary>
/// <see cref="ISync.Acquire"/>
/// </summary>
public override void Acquire()
{
Utils.FailFastIfInterrupted();
if (Precheck())
{
return;
}
WaitQueue.WaitNode w = new WaitQueue.WaitNode();
w.doWait(this);
}
/// <summary>
/// <see cref="ISync.Attempt"/>
/// </summary>
public override bool Attempt(long msecs)
{
Utils.FailFastIfInterrupted();
if (Precheck())
{
return(true);
}
if (msecs <= 0)
{
return(false);
}
WaitQueue.WaitNode w = new WaitQueue.WaitNode();
return(w.doTimedWait(this, msecs));
}
/// <summary>
/// <see cref="ISync.Release"/>
/// </summary>
public override void Release()
{
for (; ;)
{
WaitQueue.WaitNode w = Signallee;
if (w == null)
{
return; // no one to signal
}
if (w.signal(this))
{
return; // notify if still waiting, else skip
}
}
}
/// <summary>
/// Check to do on a wait node
/// </summary>
/// <param name="w"></param>
/// <returns></returns>
internal virtual bool Recheck(WaitQueue.WaitNode w)
{
lock (this)
{
bool pass = (nPermits > 0);
if (pass)
{
--nPermits;
}
else
{
wq_.Insert(w);
}
return(pass);
}
}
/// <summary>
/// <see cref="ISync.Attempt"/>
/// </summary>
public override bool Attempt(long msecs)
{
Utils.FailFastIfInterrupted();
if (Precheck())
return true;
if (msecs <= 0)
return false;
WaitQueue.WaitNode w = new WaitQueue.WaitNode();
return w.doTimedWait(this, msecs);
}
/// <summary>
/// <see cref="ISync.Acquire"/>
/// </summary>
public override void Acquire()
{
Utils.FailFastIfInterrupted();
if (Precheck())
return;
WaitQueue.WaitNode w = new WaitQueue.WaitNode();
w.doWait(this);
}
