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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.
// Allocate nested objects of ~ 25 MB
// If memory is low, after every loop, the large objects should be collected
// and committed from the LargeObjectHeap
// The Finalizer makes sure that the GC is actually collecting the large objects
using System;
namespace LargeObjectTest
{
public class OtherLargeObject
{
// disabling unused variable warning
#pragma warning disable 0414
private int[] _otherarray;
#pragma warning restore 0414
public OtherLargeObject()
{
_otherarray = new int[5000]; // 20 KB
}
}
public class LargeObject
{
// disabling unused variable warning
#pragma warning disable 0414
private int[] _array;
#pragma warning restore 0414
private OtherLargeObject[] _olargeobj;
public LargeObject()
{
_array = new int[1250000]; // 5 MB
_olargeobj = new OtherLargeObject[1000]; //20 MB
for (int i = 0; i < 1000; i++)
{
_olargeobj[i] = new OtherLargeObject();
}
}
~LargeObject()
{
TestLibrary.Logging.WriteLine("In finalizer");
Test.ExitCode = 100;
}
}
public class Test
{
public static int ExitCode = -1;
public static int Main()
{
int loop = 0;
LargeObject largeobj;
TestLibrary.Logging.WriteLine("Test should pass with ExitCode 100\n");
while (loop <= 200)
{
loop++;
TestLibrary.Logging.Write(String.Format("LOOP: {0}\n", loop));
try
{
largeobj = new LargeObject();
TestLibrary.Logging.WriteLine("Allocated LargeObject");
}
catch (Exception e)
{
TestLibrary.Logging.WriteLine("Failure to allocate at loop {0}\n", loop);
TestLibrary.Logging.WriteLine("Caught Exception: {0}", e);
return 1;
}
largeobj = null;
GC.Collect();
GC.WaitForPendingFinalizers();
TestLibrary.Logging.WriteLine("LargeObject Collected\n");
}
TestLibrary.Logging.WriteLine("Test Passed");
GC.Collect();
return ExitCode;
}
}
}
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