public KThread RelinquishMutex(long MutexAddress, out int Count)
{
Count = 0;
if (MutexWaiters.First == null)
{
return(null);
}
KThread NewMutexOwner = null;
LinkedListNode <KThread> CurrentNode = MutexWaiters.First;
do
{
//Skip all threads that are not waiting for this mutex.
while (CurrentNode != null && CurrentNode.Value.MutexAddress != MutexAddress)
{
CurrentNode = CurrentNode.Next;
}
if (CurrentNode == null)
{
break;
}
LinkedListNode <KThread> NextNode = CurrentNode.Next;
MutexWaiters.Remove(CurrentNode);
CurrentNode.Value.MutexOwner = NewMutexOwner;
if (NewMutexOwner != null)
{
//New owner was already selected, re-insert on new owner list.
NewMutexOwner.AddToMutexWaitersList(CurrentNode.Value);
}
else
{
//New owner not selected yet, use current thread.
NewMutexOwner = CurrentNode.Value;
}
Count++;
CurrentNode = NextNode;
}while (CurrentNode != null);
if (NewMutexOwner != null)
{
UpdatePriorityInheritance();
NewMutexOwner.UpdatePriorityInheritance();
}
return(NewMutexOwner);
}
public KThread RelinquishMutex(long mutexAddress, out int count)
{
count = 0;
if (_mutexWaiters.First == null)
{
return(null);
}
KThread newMutexOwner = null;
LinkedListNode <KThread> currentNode = _mutexWaiters.First;
do
{
//Skip all threads that are not waiting for this mutex.
while (currentNode != null && currentNode.Value.MutexAddress != mutexAddress)
{
currentNode = currentNode.Next;
}
if (currentNode == null)
{
break;
}
LinkedListNode <KThread> nextNode = currentNode.Next;
_mutexWaiters.Remove(currentNode);
currentNode.Value.MutexOwner = newMutexOwner;
if (newMutexOwner != null)
{
//New owner was already selected, re-insert on new owner list.
newMutexOwner.AddToMutexWaitersList(currentNode.Value);
}
else
{
//New owner not selected yet, use current thread.
newMutexOwner = currentNode.Value;
}
count++;
currentNode = nextNode;
}while (currentNode != null);
if (newMutexOwner != null)
{
UpdatePriorityInheritance();
newMutexOwner.UpdatePriorityInheritance();
}
return(newMutexOwner);
}
