/// <summary>
/// Default Constructor
/// </summary>
/// <param name="firstTask">Task to run before entering run loop.</param>
/// <param name="parentThreadPoolExecutor"><see cref="ThreadPoolExecutor"/> that controls this worker</param>
internal Worker(ThreadPoolExecutor parentThreadPoolExecutor, IRunnable firstTask)
{
FirstTask = firstTask;
_parentThreadPoolExecutor = parentThreadPoolExecutor;
Thread = parentThreadPoolExecutor.ThreadFactory.NewThread(this);
}
/// <summary>
/// Obtains and ignores the next task that the <paramref name="executor"/>
/// would otherwise execute, if one is immediately available,
/// and then retries execution of task <paramref name="runnable"/>,
/// unless the <paramref name="executor"/> is shut down, in which
/// case task <paramref name="runnable"/> is instead discarded.
/// </summary>
/// <param name="runnable">
/// The <see cref="IRunnable"/> task requested to be executed.
/// </param>
/// <param name="executor">
/// The <see cref="ThreadPoolExecutor"/> attempting to execute this
/// task.
/// </param>
public virtual void RejectedExecution(IRunnable runnable, ThreadPoolExecutor executor)
{
if (executor.IsShutdown) return;
IRunnable head;
executor.Queue.Poll(out head);
executor.Execute(runnable);
}
/// <summary>
/// Does nothing, which has the effect of discarding task
/// <paramref name="runnable"/>.
/// </summary>
/// <param name="runnable">
/// The <see cref="IRunnable"/> task requested to be executed.
/// </param>
/// <param name="executor">
/// The <see cref="ThreadPoolExecutor"/> attempting to execute this
/// task.
/// </param>
public virtual void RejectedExecution(IRunnable runnable, ThreadPoolExecutor executor)
{
}
/// <summary>
/// Always throws <see cref="RejectedExecutionException"/>.
/// </summary>
/// <param name="runnable">
/// The <see cref="IRunnable"/> task requested to be executed.
/// </param>
/// <param name="executor">
/// The <see cref="ThreadPoolExecutor"/> attempting to execute this task.
/// </param>
/// <exception cref="RejectedExecutionException">
/// Always thrown upon execution.
/// </exception>
public virtual void RejectedExecution(IRunnable runnable, ThreadPoolExecutor executor)
{
throw new RejectedExecutionException("IRunnable: " + runnable +
" rejected from execution by ThreadPoolExecutor: " + executor);
}
/// <summary>
/// Executes task <paramref name="runnable"/> in the caller's
/// thread, unless <paramref name="executor"/> has been shut down,
/// in which case the task is discarded.
/// <param name="executor">the executor attempting to execute this task</param>
/// <param name="runnable">the runnable task requested to be executed</param>
/// </summary>
public void RejectedExecution(IRunnable runnable, ThreadPoolExecutor executor)
{
if (executor.IsShutdown) return;
runnable.Run();
}
/// <summary>
/// Creates a PeerGroup with the given parameters. The connectionDelayMillis parameter controls how long the
/// PeerGroup will wait between attempts to connect to nodes or read from any added peer discovery sources.
/// </summary>
public PeerGroup(IBlockStore blockStore, NetworkParameters @params, BlockChain chain, int connectionDelayMillis)
{
_blockStore = blockStore;
_params = @params;
_chain = chain;
_connectionDelayMillis = connectionDelayMillis;
_inactives = new LinkedBlockingQueue<PeerAddress>();
_peers = new SynchronizedHashSet<Peer>();
_peerDiscoverers = new SynchronizedHashSet<IPeerDiscovery>();
_peerPool = new ThreadPoolExecutor(_coreThreads, _defaultConnections,
TimeSpan.FromSeconds(_threadKeepAliveSeconds),
new LinkedBlockingQueue<IRunnable>(1),
new PeerGroupThreadFactory());
}