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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Threading;
namespace Exchange
{
class ExchangeLong
{
static int Main(string[] args)
{
int rValue = 0;
Thread[] threads = new Thread[100];
ThreadSafe tsi = new ThreadSafe();
for (int i = 0; i < threads.Length - 1; i++)
{
if (i % 2 == 0)
threads[i] = new Thread(new ThreadStart(tsi.ThreadWorkerA));
else
threads[i] = new Thread(new ThreadStart(tsi.ThreadWorkerB));
threads[i].Start();
}
threads[threads.Length - 1] = new Thread(new ThreadStart(tsi.ThreadChecker));
threads[threads.Length - 1].Start();
tsi.Signal();
for (int i = 0; i < threads.Length; i++)
threads[i].Join();
if (tsi.Pass)
rValue = 100;
Console.WriteLine("Test {0}", rValue == 100 ? "Passed" : "Failed");
return rValue;
}
}
public class ThreadSafe
{
ManualResetEvent signal;
private long totalValue = Int64.MinValue;
private int numberOfIterations;
private long newValueA = 0;
private long newValueB = Int64.MinValue;
private bool success;
public ThreadSafe(): this(10000) { }
public ThreadSafe(int loops)
{
success = true;
signal = new ManualResetEvent(false);
numberOfIterations = loops;
}
public void Signal()
{
signal.Set();
}
public void ThreadWorkerA()
{
signal.WaitOne();
for (int i = 0; i < numberOfIterations; i++)
Interlocked.Exchange(ref totalValue, newValueA);
}
public void ThreadWorkerB()
{
signal.WaitOne();
for (int i = 0; i < numberOfIterations; i++)
Interlocked.Exchange(ref totalValue, newValueB);
}
public void ThreadChecker()
{
signal.WaitOne();
long tmpVal;
for (int i = 0; i < numberOfIterations; i++)
{
tmpVal = totalValue;
if (tmpVal != newValueB && tmpVal != newValueA)
{
Console.WriteLine(tmpVal + "," +
newValueB + "," + newValueA);
success = false;
}
Thread.Sleep(0);
}
}
public bool Pass
{
get
{
return (success);
}
}
}
}
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