Using a reader-writer lock to protect a complex business type : ReaderWriterLock « Thread « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Thread
3. ReaderWriterLock

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime;
using System.Runtime.CompilerServices;
using System.Security;
using System.Text;
using System.Threading;

class Account
{
    public string company ="No Name";
    public decimal balance= 0.0m;
    public DateTime lastUpdate = DateTime.Now;
    public ReaderWriterLock syncLock = new ReaderWriterLock();

    public decimal AutoUpdateBalance(decimal delta)
    {
        syncLock.AcquireWriterLock(-1);
        try
        {
            balance += delta;
            lastUpdate = DateTime.Now;
            return balance;
        }
        finally
        {
            syncLock.ReleaseWriterLock();
        }
    }

    public void GetState(out string company, out decimal balance, out DateTime lastUpdate)
    {
        syncLock.AcquireReaderLock(-1);
        try
        {
            company = this.company;
            balance = this.balance;
            lastUpdate = this.lastUpdate;
        }
        finally
        {
            syncLock.ReleaseReaderLock();
        }
    }
}


public class MainClass
{
    
    public static void Main()
    {
        Account account = new Account();

        string company;
        decimal balance;
        DateTime lastUpdate;

        account.GetState(out company, out balance, out lastUpdate);
        Console.WriteLine("{0}, balance: {1}, last updated: {2}",company, balance, lastUpdate);
    }
}

No Name, balance: 0.0, last updated: 25/03/2007 3:04:25 PM