private int AllocateBlockId()
{
var freeBlock = FreeBlocks.Where(b => !InitialFreeBlocks.Contains(b)).FirstOrDefault();
if (freeBlock == 0)
{
freeBlock = FreeBlocks.FirstOrDefault();
}
if (freeBlock == 0)
{
freeBlock = TailBlockId++;
}
FreeBlocks.Remove(freeBlock);
AllocatedBlocks.Add(freeBlock);
return(freeBlock);
}
/// <summary>
/// Writes the specified value.
/// </summary>
/// <param name="value">The value.</param>
/// <returns>System.Int64.</returns>
public long Write(string value)
{
lock (_writeLock)
{
if (BlocksFree <= 0)
{
return(-1);
}
var freeBlock = FreeBlocks.First();
using (var accessor = MapFile.CreateViewAccessor(freeBlock * MaxBlockSize, MaxBlockSize))
{
accessor.WriteArray(0, Encoding.ASCII.GetBytes(value), 0, value.Length);
}
FreeBlocks = FreeBlocks.Where(block => !block.Equals(freeBlock)).ToList();
BlocksFree--;
Save();
return(freeBlock);
}
}