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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if STRESS
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reactive.Disposables;
using System.Reflection;
using System.Threading;
namespace ReactiveTests.Stress.Disposables
{
public class RefCount
{
/// <summary>
/// Disposes the primary disposable first, allocates a number of dependents on different threads, and disposes them on different threads.
/// Ref count should reach zero, and the inner disposable should be called.
/// </summary>
public static void PrimaryFirst_DependentsTrigger()
{
Console.Title = MethodInfo.GetCurrentMethod().Name + " - 0% complete";
var rnd = new Random();
for (int i = 1; i <= 100; i++)
{
Impl(true, false, new[] { 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024 });
Impl(true, false, new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
Impl(true, false, Enumerable.Range(0, 10).Select(_ => rnd.Next(0, 1000)));
Console.Title = MethodInfo.GetCurrentMethod().Name + " - " + i + "% complete";
}
}
/// <summary>
/// Allocates a number of dependents on different threads, disposes them on different threads, and disposes the primary disposable last.
/// Ref count should reach zero, and the inner disposable should be called.
/// </summary>
public static void DependentsFirst_PrimaryTrigger()
{
Console.Title = MethodInfo.GetCurrentMethod().Name + " - 0% complete";
var rnd = new Random();
for (int i = 1; i <= 100; i++)
{
Impl(false, false, new[] { 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024 });
Impl(false, false, new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
Impl(false, false, Enumerable.Range(0, 10).Select(_ => rnd.Next(0, 1000)));
Console.Title = MethodInfo.GetCurrentMethod().Name + " - " + i + "% complete";
}
}
/// <summary>
/// Allocates a number of dependents on different threads, disposes them on different threads, and disposes the primary disposable at a random time.
/// Ref count should reach zero, and the inner disposable should be called.
/// </summary>
public static void DependentsFirst_PrimaryRandom()
{
Console.Title = MethodInfo.GetCurrentMethod().Name + " - 0% complete";
var rnd = new Random();
for (int i = 1; i <= 100; i++)
{
Impl(false, true, new[] { 0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024 });
Impl(false, true, new[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 });
Impl(false, true, Enumerable.Range(0, 10).Select(_ => rnd.Next(0, 1000)));
Console.Title = MethodInfo.GetCurrentMethod().Name + " - " + i + "% complete";
}
}
private static void Impl(bool primaryFirst, bool primaryRandom, IEnumerable<int> nDependents)
{
var rand = new Random();
foreach (var n in nDependents)
{
var e = new ManualResetEvent(false);
var hasDependent = new ManualResetEvent(false);
var r = new RefCountDisposable(Disposable.Create(() => { e.Set(); }));
var d = default(IDisposable);
if (primaryFirst)
{
d = r.GetDisposable();
r.Dispose();
}
else if (primaryRandom)
{
var sleep = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
ThreadPool.QueueUserWorkItem(_ =>
{
hasDependent.WaitOne();
Helpers.SleepOrSpin(sleep);
r.Dispose();
});
if (n == 0)
hasDependent.Set();
}
Console.Write(n + " - ");
var cd = new CountdownEvent(n * 2);
for (int i = 0; i < n; i++)
{
var j = i;
var sleep1 = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
var sleep2 = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
var sleep3 = rand.Next(0, 10) == 0 /* 10% chance */ ? rand.Next(2, 100) : 0;
ThreadPool.QueueUserWorkItem(_ =>
{
Helpers.SleepOrSpin(sleep1);
Console.Write("+");
var f = r.GetDisposable();
if (j == 0)
hasDependent.Set();
Helpers.SleepOrSpin(sleep2);
ThreadPool.QueueUserWorkItem(__ =>
{
Helpers.SleepOrSpin(sleep3);
f.Dispose();
Console.Write("-");
cd.Signal();
});
cd.Signal();
});
}
cd.Wait();
if (primaryFirst)
d.Dispose();
else if (!primaryRandom)
r.Dispose();
e.WaitOne();
Console.WriteLine(".");
}
}
}
}
#endif
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