public AsyncLock ObtainLock(String filePath)
{
lock ( syncLock )
{
LockWithCounter lockWithCounter = null;
if (!ongoingOperations.TryGetValue(filePath, out lockWithCounter))
{
lockWithCounter = new LockWithCounter();
ongoingOperations.Add(filePath, lockWithCounter);
}
lockWithCounter.counter++;
return(lockWithCounter.asyncLock);
}
}
public void ReleaseLock(string filePath)
{
lock ( syncLock )
{
LockWithCounter lockWithCounter = null;
if (ongoingOperations.TryGetValue(filePath, out lockWithCounter))
{
lockWithCounter.counter--;
if (lockWithCounter.counter <= 0)
{
ongoingOperations.Remove(filePath);
}
}
}
}