public Task <bool> WaitAsync(int millisecondsTimeout, CancellationToken cancellationToken)
{
this.CheckDispose();
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("totalMilliSeconds", millisecondsTimeout, SemaphoreSlim.GetResourceString("SemaphoreSlim_Wait_TimeoutWrong"));
}
if (cancellationToken.IsCancellationRequested)
{
return(Task.FromCancellation <bool>(cancellationToken));
}
object lockObj = this.m_lockObj;
Task <bool> result;
lock (lockObj)
{
if (this.m_currentCount > 0)
{
this.m_currentCount--;
if (this.m_waitHandle != null && this.m_currentCount == 0)
{
this.m_waitHandle.Reset();
}
result = SemaphoreSlim.s_trueTask;
}
else
{
SemaphoreSlim.TaskNode taskNode = this.CreateAndAddAsyncWaiter();
result = ((millisecondsTimeout == -1 && !cancellationToken.CanBeCanceled) ? taskNode : this.WaitUntilCountOrTimeoutAsync(taskNode, millisecondsTimeout, cancellationToken));
}
}
return(result);
}
// Token: 0x06003DF7 RID: 15863 RVA: 0x000E6388 File Offset: 0x000E4588
private async Task <bool> WaitUntilCountOrTimeoutAsync(SemaphoreSlim.TaskNode asyncWaiter, int millisecondsTimeout, CancellationToken cancellationToken)
{
using (CancellationTokenSource cts = cancellationToken.CanBeCanceled ? CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, default(CancellationToken)) : new CancellationTokenSource())
{
Task <Task> task = Task.WhenAny(new Task[]
{
asyncWaiter,
Task.Delay(millisecondsTimeout, cts.Token)
});
object obj = asyncWaiter;
Task task2 = await task.ConfigureAwait(false);
if (obj == task2)
{
obj = null;
cts.Cancel();
return(true);
}
}
CancellationTokenSource cts = null;
object lockObj = this.m_lockObj;
lock (lockObj)
{
if (this.RemoveAsyncWaiter(asyncWaiter))
{
cancellationToken.ThrowIfCancellationRequested();
return(false);
}
}
return(await asyncWaiter.ConfigureAwait(false));
}
private bool RemoveAsyncWaiter(SemaphoreSlim.TaskNode task)
{
int num = this.m_asyncHead == task ? 1 : (task.Prev != null ? 1 : 0);
if (task.Next != null)
{
task.Next.Prev = task.Prev;
}
if (task.Prev != null)
{
task.Prev.Next = task.Next;
}
if (this.m_asyncHead == task)
{
this.m_asyncHead = task.Next;
}
if (this.m_asyncTail == task)
{
this.m_asyncTail = task.Prev;
}
SemaphoreSlim.TaskNode taskNode1 = task;
// ISSUE: variable of the null type
__Null local;
SemaphoreSlim.TaskNode taskNode2 = (SemaphoreSlim.TaskNode)(local = null);
taskNode1.Prev = (SemaphoreSlim.TaskNode)local;
SemaphoreSlim.TaskNode taskNode3 = taskNode2;
taskNode1.Next = taskNode3;
return(num != 0);
}
public Task <bool> WaitAsync(int millisecondsTimeout, CancellationToken cancellationToken)
{
this.CheckDispose();
if (millisecondsTimeout < -1)
{
throw new ArgumentOutOfRangeException("totalMilliSeconds", (object)millisecondsTimeout, SemaphoreSlim.GetResourceString("SemaphoreSlim_Wait_TimeoutWrong"));
}
if (cancellationToken.IsCancellationRequested)
{
return(Task.FromCancellation <bool>(cancellationToken));
}
lock (this.m_lockObj)
{
if (this.m_currentCount > 0)
{
this.m_currentCount = this.m_currentCount - 1;
if (this.m_waitHandle != null && this.m_currentCount == 0)
{
this.m_waitHandle.Reset();
}
return(SemaphoreSlim.s_trueTask);
}
SemaphoreSlim.TaskNode local_3 = this.CreateAndAddAsyncWaiter();
return(millisecondsTimeout != -1 || cancellationToken.CanBeCanceled ? this.WaitUntilCountOrTimeoutAsync(local_3, millisecondsTimeout, cancellationToken) : (Task <bool>)local_3);
}
}
public int Release(int releaseCount)
{
this.CheckDispose();
if (releaseCount < 1)
{
throw new ArgumentOutOfRangeException("releaseCount", (object)releaseCount, SemaphoreSlim.GetResourceString("SemaphoreSlim_Release_CountWrong"));
}
int num;
lock (this.m_lockObj)
{
int local_3 = this.m_currentCount;
num = local_3;
if (this.m_maxCount - local_3 < releaseCount)
{
throw new SemaphoreFullException();
}
int local_3_1 = local_3 + releaseCount;
int local_4 = this.m_waitCount;
if (local_3_1 == 1 || local_4 == 1)
{
Monitor.Pulse(this.m_lockObj);
}
else if (local_4 > 1)
{
Monitor.PulseAll(this.m_lockObj);
}
if (this.m_asyncHead != null)
{
int local_5 = local_3_1 - local_4;
while (local_5 > 0 && this.m_asyncHead != null)
{
--local_3_1;
--local_5;
SemaphoreSlim.TaskNode local_6 = this.m_asyncHead;
this.RemoveAsyncWaiter(local_6);
SemaphoreSlim.QueueWaiterTask(local_6);
}
}
this.m_currentCount = local_3_1;
if (this.m_waitHandle != null)
{
if (num == 0)
{
if (local_3_1 > 0)
{
this.m_waitHandle.Set();
}
}
}
}
return(num);
}
protected virtual void Dispose(bool disposing)
{
if (!disposing)
{
return;
}
if (this.m_waitHandle != null)
{
this.m_waitHandle.Close();
this.m_waitHandle = (ManualResetEvent)null;
}
this.m_lockObj = (object)null;
this.m_asyncHead = (SemaphoreSlim.TaskNode)null;
this.m_asyncTail = (SemaphoreSlim.TaskNode)null;
}
public int Release(int releaseCount)
{
this.CheckDispose();
if (releaseCount < 1)
{
throw new ArgumentOutOfRangeException("releaseCount", releaseCount, SemaphoreSlim.GetResourceString("SemaphoreSlim_Release_CountWrong"));
}
object lockObj = this.m_lockObj;
int num2;
lock (lockObj)
{
int num = this.m_currentCount;
num2 = num;
if (this.m_maxCount - num < releaseCount)
{
throw new SemaphoreFullException();
}
num += releaseCount;
int waitCount = this.m_waitCount;
if (num == 1 || waitCount == 1)
{
Monitor.Pulse(this.m_lockObj);
}
else if (waitCount > 1)
{
Monitor.PulseAll(this.m_lockObj);
}
if (this.m_asyncHead != null)
{
int num3 = num - waitCount;
while (num3 > 0 && this.m_asyncHead != null)
{
num--;
num3--;
SemaphoreSlim.TaskNode asyncHead = this.m_asyncHead;
this.RemoveAsyncWaiter(asyncHead);
SemaphoreSlim.QueueWaiterTask(asyncHead);
}
}
this.m_currentCount = num;
if (this.m_waitHandle != null && num2 == 0 && num > 0)
{
this.m_waitHandle.Set();
}
}
return(num2);
}
// Token: 0x06003DF5 RID: 15861 RVA: 0x000E62AC File Offset: 0x000E44AC
private SemaphoreSlim.TaskNode CreateAndAddAsyncWaiter()
{
SemaphoreSlim.TaskNode taskNode = new SemaphoreSlim.TaskNode();
if (this.m_asyncHead == null)
{
this.m_asyncHead = taskNode;
this.m_asyncTail = taskNode;
}
else
{
this.m_asyncTail.Next = taskNode;
taskNode.Prev = this.m_asyncTail;
this.m_asyncTail = taskNode;
}
return(taskNode);
}
// Token: 0x06003DF6 RID: 15862 RVA: 0x000E62F8 File Offset: 0x000E44F8
private bool RemoveAsyncWaiter(SemaphoreSlim.TaskNode task)
{
bool result = this.m_asyncHead == task || task.Prev != null;
if (task.Next != null)
{
task.Next.Prev = task.Prev;
}
if (task.Prev != null)
{
task.Prev.Next = task.Next;
}
if (this.m_asyncHead == task)
{
this.m_asyncHead = task.Next;
}
if (this.m_asyncTail == task)
{
this.m_asyncTail = task.Prev;
}
task.Next = (task.Prev = null);
return(result);
}
private async Task <bool> WaitUntilCountOrTimeoutAsync(SemaphoreSlim.TaskNode asyncWaiter, int millisecondsTimeout, CancellationToken cancellationToken)
{
CancellationTokenSource cts = cancellationToken.CanBeCanceled ? CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, new CancellationToken()) : new CancellationTokenSource();
try
{
Task <Task> task1 = Task.WhenAny((Task)asyncWaiter, Task.Delay(millisecondsTimeout, cts.Token));
object obj = (object)asyncWaiter;
int num = 0;
Task task2 = await task1.ConfigureAwait(num != 0);
if (obj == task2)
{
obj = (object)null;
cts.Cancel();
return(true);
}
}
finally
{
if (cts != null)
{
cts.Dispose();
}
}
cts = (CancellationTokenSource)null;
lock (this.m_lockObj)
{
if (this.RemoveAsyncWaiter(asyncWaiter))
{
cancellationToken.ThrowIfCancellationRequested();
return(false);
}
}
return(await asyncWaiter.ConfigureAwait(false));
}
private static void QueueWaiterTask(SemaphoreSlim.TaskNode waiterTask)
{
ThreadPool.UnsafeQueueCustomWorkItem(waiterTask, false);
}
