77 lines
2.1 KiB
C#
77 lines
2.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography.X509Certificates;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using Npgsql;
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namespace skyscraper5.Data.PostgreSql
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{
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public partial class PostgresqlDataStore
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{
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private Thread _writerThread;
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private delegate void WriterTask(NpgsqlConnection connection);
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private Queue<WriterTask> _writerTasks;
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private void EnqueueTask(WriterTask task)
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{
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if (_writerTasks == null)
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{
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_writerTasks = new Queue<WriterTask>();
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}
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lock (_writerTasks)
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{
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_writerTasks.Enqueue(task);
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}
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if (_writerThread == null)
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{
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_writerThread = new Thread(WriterThreadFunction);
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_writerThread.Priority = ThreadPriority.Highest;
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_writerThread.Name = "PostgreSQL Writer Thread";
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_writerThread.Start();
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}
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}
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private NpgsqlTransaction transaction;
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private void WriterThreadFunction()
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{
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using (NpgsqlConnection connection = new NpgsqlConnection(connectionStringBuilder.ToString()))
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{
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connection.Open();
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transaction = connection.BeginTransaction();
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while (_writerTasks.Count > 0)
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{
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WriterTask task;
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lock (_writerTasks)
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{
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task = _writerTasks.Dequeue();
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}
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task(connection);
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}
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transaction.Commit();
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transaction.Dispose();
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connection.Close();
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}
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_writerThread = null;
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}
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private void CommitTransaction(NpgsqlConnection conn)
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{
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transaction.Commit();
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transaction.Dispose();
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transaction = conn.BeginTransaction();
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if (_isWaitingForCompletion)
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{
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Console.WriteLine("-> DB: {0} tasks remain.", _writerTasks.Count);
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}
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}
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}
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}
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