public virtual long Peek()
{
if (IdValidator.isReservedId(_nextId))
{
_nextId++;
}
return(_nextId);
}
private void AssertNoReservedId(IdRange range)
{
foreach (long id in range.DefragIds)
{
assertFalse(IdValidator.isReservedId(id));
}
assertFalse(IdValidator.hasReservedIdInRange(range.RangeStart, range.RangeStart + range.RangeLength));
}
public override IdRange NextIdBatch(int size)
{
while (IdValidator.hasReservedIdInRange(_nextId, _nextId + size))
{
_nextId += size;
}
long startId = _nextId;
_nextId += size;
return(new IdRange(EMPTY_LONG_ARRAY, startId, size));
}
/// <summary>
/// Frees the <CODE>id</CODE> making it a defragged id that will be
/// returned by next id before any new id (that hasn't been used yet) is
/// returned.
/// <para>
/// This method will throw an <CODE>IOException</CODE> if id is negative or
/// if id is greater than the highest returned id. However as stated in the
/// class documentation above the id isn't validated to see if it really is
/// free.
///
/// </para>
/// </summary>
/// <param name="id">
/// The id to be made available again </param>
public override void FreeId(long id)
{
lock (this)
{
_idContainer.assertStillOpen();
if (IdValidator.isReservedId(id))
{
return;
}
if (id < 0 || id >= _highId)
{
throw new System.ArgumentException("Illegal id[" + id + "], highId is " + _highId);
}
_idContainer.freeId(id);
}
}
/// <summary>
/// Returns the next "free" id. If a defragged id exist it will be returned
/// else the next free id that hasn't been used yet is returned. If no id
/// exist the capacity is exceeded (all values <= max are taken) and a
/// <seealso cref="UnderlyingStorageException"/> will be thrown.
/// </summary>
/// <returns> The next free id </returns>
/// <exception cref="UnderlyingStorageException">
/// If the capacity is exceeded </exception>
/// <exception cref="IllegalStateException"> if this id generator has been closed </exception>
public override long NextId()
{
lock (this)
{
AssertStillOpen();
long nextDefragId = _idContainer.ReusableId;
if (nextDefragId != IdContainer.NO_RESULT)
{
return(nextDefragId);
}
if (IdValidator.isReservedId(_highId))
{
_highId++;
}
IdValidator.assertValidId(_idType, _highId, _max);
return(_highId++);
}
}
public override long NextId()
{
try
{
if (_position < _defrag.Length)
{
return(_defrag[_position]);
}
long candidate = NextRangeCandidate();
if (IdValidator.isReservedId(candidate))
{
_position++;
candidate = NextRangeCandidate();
}
return(candidate);
}
finally
{
++_position;
}
}
public static long LongFromIntAndMod(long @base, long modifier)
{
return(modifier == 0 && IdValidator.isReservedId(@base) ? -1 : @base | modifier);
}