public T Get(int timeout)
{
lock (monitor) {
if (value != null)
{
return(value);
}
if (timeout == 0)
{
return(null);
}
do
{
int refTime = Environment.TickCount;
Monitor.Wait(monitor, timeout);
if (value != null)
{
return(value);
}
timeout = SynchUtils.RemainingTimeout(refTime, timeout);
if (timeout == 0)
{
return(null);
}
}while (true);
}
}
public bool Take(int timeout, out T rmsg)
{
lock (monitor)
{
LinkedListNode <T> linkedListNode;
if (queue.Count > 0)
{
linkedListNode = queue.First;
rmsg = linkedListNode.Value;
queue.RemoveFirst();
monitor.Signal(linkedListNode);
return(true);
}
do
{
if (!monitor.Await(queue, timeout))
{
rmsg = default(T);
return(false);
}
timeout = SynchUtils.RemainingTimeout(Environment.TickCount, timeout);
} while (queue.Count == 0);
linkedListNode = queue.First;
rmsg = linkedListNode.Value;
queue.RemoveFirst();
monitor.Signal(linkedListNode);
return(true);
}
}
public bool Transfer(T msg, int timeout)
{
lock (monitor)
{
LinkedListNode <T> listNode = queue.AddLast(msg);
monitor.Signal(queue);
try
{
do
{
if (!monitor.Await(listNode, timeout) && queue.Contains(msg))
{
queue.Remove(msg);
return(false);
}
timeout = SynchUtils.RemainingTimeout(Environment.TickCount, timeout);
} while (queue.Contains(msg));
}
catch (ThreadInterruptedException)
{
if (queue.Contains(msg))
{
queue.Remove(msg);
throw;
}
Thread.CurrentThread.Interrupt();
return(true);
}
return(true);
}
}
public bool Wait(int timeout) // throws InterruptedException
{
lock (monitor) {
// fast path
// note that is signaled the list must be empty
if (signaled)
{
signaled = false;
return(true);
}
if (timeout == 0)
{
return(false);
}
var wNode = waiters.AddLast(false);
do
{
try {
int refTime = Environment.TickCount;
Monitor.Wait(monitor, timeout);
if (wNode.Value == true)
{
return(true);
}
timeout = SynchUtils.RemainingTimeout(refTime, timeout);
if (timeout == 0)
{
// abort wait
waiters.Remove(wNode);
return(false);
}
}
catch (ThreadInterruptedException e) {
if (wNode.Value == true)
{
// delay interruption and return success
Thread.CurrentThread.Interrupt();
return(true);
}
// abort wait
waiters.Remove(wNode);
throw e;
}
} while (true);
}
}
public T Exchange(T mine, int timeout) // throws TimeoutException, InterruptedException
{
lock (monitor) {
T other;
ExchangePoint current = exchanger;
if ((other = current.pairing(mine)) != null)
{
exchanger = new ExchangePoint();
Monitor.PulseAll(monitor);
return(other);
}
if (timeout == 0)
{
current.restart();
throw new TimeoutException();
}
do
{
try {
int refTime = Environment.TickCount;
Monitor.Wait(monitor);
if (current.state == State.DONE)
{
return(current.second);
}
timeout = SynchUtils.RemainingTimeout(refTime, timeout);
if (timeout == 0)
{
current.state = State.TIMEOUT;
throw new TimeoutException();
}
}
catch (ThreadInterruptedException e) {
if (current.state == State.DONE)
{
Thread.CurrentThread.Interrupt();
return(current.second);
}
current.state = State.INTERRUPTED;
throw e;
}
}while (true);
}
}
public Pair Take(int timeout) // throws ThreadInterruptedException
{
lock (monitor) {
// fast path
if (waiters.Count > 0 /* avoid barging */ && PairCompleted())
{
var pair = pairs.First.Value;
pairs.RemoveFirst();
return(pair);
}
if (timeout == 0)
{
return(null);
}
// prepare wait
var req = waiters.AddLast((object)null);
do
{
try {
int refTime = Environment.TickCount;
Monitor.Wait(monitor, timeout);
if (waiters.First == req && PairCompleted())
{
var pair = pairs.First.Value;
pairs.RemoveFirst();
return(pair);
}
timeout = SynchUtils.RemainingTimeout(refTime, timeout);
if (timeout == 0)
{
// abort wait
waiters.Remove(req);
return(null);
}
}
catch (ThreadInterruptedException) {
// abort wait
waiters.Remove(req);
throw;
}
}while (true);
}
}
public Tuple <T, U> Provide(U value, int timeout)
{
lock (monitor)
{
MyTupleWrapper myTupleWrapper = list.Find(mtw => mtw.tValue != null);
if (myTupleWrapper != null)
{
list.Remove(myTupleWrapper);
monitor.Signal(myTupleWrapper);
myTupleWrapper.tuple = new Tuple <T, U>(myTupleWrapper.tValue, value);
return(myTupleWrapper.tuple);
}
myTupleWrapper = new MyTupleWrapper();
myTupleWrapper.uValue = value;
list.Add(myTupleWrapper);
do
{
timeout = SynchUtils.RemainingTimeout(Environment.TickCount, timeout);
try
{
if (!monitor.Await(myTupleWrapper))
{
if (myTupleWrapper.tuple == null)
{
throw new TimeoutException();
}
}
}
catch
{
if (myTupleWrapper.tuple != null)
{
Thread.CurrentThread.Interrupt();
return(myTupleWrapper.tuple);
}
list.Remove(myTupleWrapper);
throw;
}
} while (myTupleWrapper == null);
return(myTupleWrapper.tuple);
}
}
public bool Wait(int timeout)
{
lock (monitor)
{
if (signaled)
{
signaled = false;
return(true);
}
var wNode = waiters.AddLast(false);
while (true)
{
try
{
int refTime = Environment.TickCount;
Monitor.Wait(monitor, timeout);
if (wNode.Value)
{
return(true);
}
timeout = SynchUtils.RemainingTimeout(refTime, timeout);
if (timeout == 0)
{
waiters.Remove(wNode);
return(false);
}
}
catch (ThreadInterruptedException e)
{
if (wNode.Value == true)
{
Thread.CurrentThread.Interrupt();
return(true);
}
waiters.Remove(wNode);
throw e;
}
}
}
}
