public MetamineBlock[] Next(MetamineStrategy strategy, PeerHash peer)
{
MetamineStrategyContext context = new MetamineStrategyContext
{
Peer = peer,
Blocks = blocks,
Configuration = configuration,
Reservations = reservations
};
return(strategy.Next(context).ToArray());
}
public override IEnumerable <MetamineBlock> Next(MetamineStrategyContext context)
{
DateTime now = DateTime.Now;
int left = context.Configuration.Size;
for (int offset = 0; left > 0; offset += 16384, left -= 16384)
{
int size = Math.Min(left, 16384);
MetamineBlock block = new MetamineBlock(offset / 16384, size);
if (IsReservable(context, block, now))
{
yield return(block);
yield break;
}
}
}
public abstract IEnumerable <MetamineBlock> Next(MetamineStrategyContext context);
private bool HasReservation(MetamineStrategyContext context)
{
return(context.Reservations.Contains(context.Peer));
}
private bool IsReserved(MetamineStrategyContext context, MetamineBlock block, DateTime now)
{
return(context.Reservations.Contains(block, now) ||
context.Reservations.Contains(block, context.Peer));
}
private bool IsCompleted(MetamineStrategyContext context, MetamineBlock block)
{
return(context.Blocks.Contains(block));
}
private bool IsReservable(MetamineStrategyContext context, MetamineBlock block, DateTime now)
{
return(IsCompleted(context, block) == false &&
IsReserved(context, block, now) == false &&
HasReservation(context) == false);
}