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Add Unit Tests for GC (#206) 

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José Simões 2023-10-20 10:35:31 +01:00 коммит произвёл GitHub
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Коммит 988dfedf9b
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49
Tests/NFUnitTestGC/NFUnitTestGC.nfproj Normal file
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<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="Current" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup Label="Globals">
<NanoFrameworkProjectSystemPath>$(MSBuildExtensionsPath)\nanoFramework\v1.0\</NanoFrameworkProjectSystemPath>
</PropertyGroup>
<Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.Default.props" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.Default.props')" />
<ItemGroup>
<ProjectCapability Include="TestContainer" />
</ItemGroup>
<PropertyGroup>
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
<ProjectTypeGuids>{11A8DD76-328B-46DF-9F39-F559912D0360};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
<ProjectGuid>768be3b6-41c6-4dfb-8a2d-443b2113f5ad</ProjectGuid>
<OutputType>Library</OutputType>
<AppDesignerFolder>Properties</AppDesignerFolder>
<FileAlignment>512</FileAlignment>
<RootNamespace>NFUnitTestGC</RootNamespace>
<AssemblyName>NFUnitTest</AssemblyName>
<IsCodedUITest>False</IsCodedUITest>
<IsTestProject>true</IsTestProject>
<TestProjectType>UnitTest</TestProjectType>
<TargetFrameworkVersion>v1.0</TargetFrameworkVersion>
</PropertyGroup>
<Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.props" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.props')" />
<ItemGroup>
<Compile Include="TestGCWithByteArrays.cs" />
<Compile Include="TestGCWithTimeSpanArrays.cs" />
<Compile Include="TestGCWithDateTimeArrays.cs" />
<Compile Include="TestGCWithObjectArrays.cs" />
<Compile Include="TestGC.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
</ItemGroup>
<ItemGroup>
<Reference Include="mscorlib">
<HintPath>..\..\packages\nanoFramework.CoreLibrary.1.14.2\lib\mscorlib.dll</HintPath>
</Reference>
<Reference Include="nanoFramework.TestFramework">
<HintPath>..\..\packages\nanoFramework.TestFramework.2.1.85\lib\nanoFramework.TestFramework.dll</HintPath>
</Reference>
<Reference Include="nanoFramework.UnitTestLauncher">
<HintPath>..\..\packages\nanoFramework.TestFramework.2.1.85\lib\nanoFramework.UnitTestLauncher.exe</HintPath>
</Reference>
</ItemGroup>
<ItemGroup>
<None Include="packages.config" />
</ItemGroup>
<Import Project="$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets" Condition="Exists('$(NanoFrameworkProjectSystemPath)NFProjectSystem.CSharp.targets')" />
</Project>

31
Tests/NFUnitTestGC/Properties/AssemblyInfo.cs Normal file
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using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
// General Information about an assembly is controlled through the following
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyCopyright("Copyright (c) 2021 nanoFramework contributors")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]
// Setting ComVisible to false makes the types in this assembly not visible
// to COM components. If you need to access a type in this assembly from
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]
// Version information for an assembly consists of the following four values:
//
// Major Version
// Minor Version
// Build Number
// Revision
//
// You can specify all the values or you can default the Build and Revision Numbers
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

48
Tests/NFUnitTestGC/TestGC.cs Normal file
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//
// Copyright (c) .NET Foundation and Contributors
// Portions Copyright (c) Microsoft Corporation. All rights reserved.
// See LICENSE file in the project root for full license information.
//
using nanoFramework.TestFramework;
using System;
namespace NFUnitTestGC
{
[TestClass]
public class TestGC
{
[TestMethod]
public void TestGCStress()
{
int maxArraySize = 1024 * 32;
object[] arrays = new object[600];
OutputHelper.WriteLine("Starting TestGCStress");
for (int loop = 0; loop < 100; loop++)
{
OutputHelper.WriteLine($"Running iteration {loop}");
for (int i = 0; i < arrays.Length - 1;)
{
OutputHelper.WriteLine($"Alloc array of {maxArraySize} bytes @ pos {i}");
arrays[i++] = new byte[maxArraySize]; ;
OutputHelper.WriteLine($"Alloc array of 64 bytes @ pos {i}");
arrays[i++] = new byte[64];
}
arrays[0] = new byte[maxArraySize];
for (int i = 0; i < arrays.Length; i++)
{
arrays[i] = null;
}
}
OutputHelper.WriteLine("Completed TestGCStress");
}
}
}

89
Tests/NFUnitTestGC/TestGCWithByteArrays.cs Normal file
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//
// Copyright (c) .NET Foundation and Contributors
// Portions Copyright (c) Microsoft Corporation. All rights reserved.
// See LICENSE file in the project root for full license information.
//
using nanoFramework.TestFramework;
using System;
namespace NFUnitTestGC
{
[TestClass]
public class TestGCWithByteArrays
{
[TestMethod]
public void TestCompactionForNotFixedArray()
{
OutputHelper.WriteLine("Starting TestCompactionForNotFixedArray");
for (int loop = 0; loop < 10; loop++)
{
OutputHelper.WriteLine($"Starting iteration {loop}");
// First we create byte and holes that keeps some space that could be used by compaction
// Small count so compaction does not happen
byte[] arrayOfArrays = new byte[10];
RunAllocations(arrayOfArrays);
// This is the array that we expect to move in during compaction.
byte[] testNativeBuffer = new byte[100];
// Fill it, so it is not optimized out
Random random = new();
var baseValue = random.Next(2);
for (int i = 0; i < testNativeBuffer.Length; i++)
{
testNativeBuffer[i] = (byte)(i * baseValue);
}
// trigger compaction
InitiateCompaction();
int index = 0;
// Check that array content is not corrupted
foreach (var item in testNativeBuffer)
{
Assert.AreEqual(index * baseValue, item, $"Array content comparison failed at position {index}. Expecting {(index * baseValue)}, found {item}");
index++;
}
OutputHelper.WriteLine("No corruption detected in array");
}
OutputHelper.WriteLine("Completed TestCompactionForNotFixedArray");
}
void RunAllocations(byte[] arrObj)
{
for (int i = 1; i < arrObj.Length; i++)
{
// Creates referenced byte, which stays in memory until InitiateCompaction exits
arrObj[i] = new byte();
// Tries to create larger object that would be later hole .
// This object could be garbage collected on each "i" cycle.
byte[] arr = new byte[50 * i];
// Creates some usage for arr, so it is not optimized out.
arr[0] = 1;
arr[1] = 2;
OutputHelper.WriteLine($"On Cycle {i:D3} Array of {arr[1]} was allocated");
}
}
// This method causes compaction to occur.
// It is not so trivial as it need to fragment heap with referenced byte array.
void InitiateCompaction()
{
// large count, so compaction happens during call to RunAllocations
byte[] arrayOfArrays = new byte[1500];
RunAllocations(arrayOfArrays);
}
}
}

214
Tests/NFUnitTestGC/TestGCWithDateTimeArrays.cs Normal file
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//
// Copyright (c) .NET Foundation and Contributors
// Portions Copyright (c) Microsoft Corporation. All rights reserved.
// See LICENSE file in the project root for full license information.
//
using nanoFramework.TestFramework;
using System;
namespace NFUnitTestGC
{
[TestClass]
public class TestGCWithDateTimeArrays
{
[TestMethod]
public void TestCompactionForNotFixedDateTimeArray()
{
OutputHelper.WriteLine("Starting TestCompactionForNotFixedDateTimeArray");
for (int loop = 0; loop < 10; loop++)
{
OutputHelper.WriteLine($"Starting iteration {loop}");
// First we create objects and holes that keeps some space that could be used by compaction.
// Small count so compaction does not happen.
HolderForDateTime[] arrayOfArrays = new HolderForDateTime[10];
RunDateTimeAllocations(arrayOfArrays);
// This is the array that we expect to move in during compaction.
HolderForDateTime[] testNativeBuffer = new HolderForDateTime[100];
// Fill it, so it is not optimized out
for (int i = 0; i < testNativeBuffer.Length; i++)
{
testNativeBuffer[i] = new HolderForDateTime(GetRandomDateTime());
}
OutputHelper.WriteLine("Large HolderForDateTime array created");
OutputHelper.WriteLine("Forcing compaction to occurr");
// Causes compaction
InitiateDateTimeCompaction();
OutputHelper.WriteLine("Compaction occurred");
OutputHelper.WriteLine("Checking arrays for corrupted data...");
int index = 0;
// Check that array content is not corrupted
foreach (HolderForDateTime holder in testNativeBuffer)
{
Assert.AreEqual(holder.StoredTicks, holder.DtValue.Ticks, $"Array content comparison failed at position {index}. Expecting {holder.StoredTicks}, found {holder.DtValue.Ticks}");
index++;
}
OutputHelper.WriteLine("No corruption detected in array");
}
OutputHelper.WriteLine("Completed TestCompactionForNotFixedArray");
}
// This function cause compaction to occur.
// It is not so trivial as it need to fragment heap with referenced objects.
void InitiateDateTimeCompaction()
{
// Large count, so compaction happens during RunAllocations.
HolderForDateTime[] arrayOfArrays = new HolderForDateTime[500];
RunDateTimeAllocations(arrayOfArrays);
}
private void RunDateTimeAllocations(HolderForDateTime[] arrObj)
{
for (int i = 1; i < arrObj.Length; i++)
{
// Creates referenced object, which stays in memory until InitiateCompaction exits
arrObj[i] = new HolderForDateTime(DateTime_btwn_1801_And_2801());
// Tries to create larger object that would be later hole
// This object could be garbage collected on each "i" cycle
HolderForDateTime[] arr = new HolderForDateTime[50 * i];
// Creates some usage for array elements, so it is not optimized out
arr[0] = new HolderForDateTime(DateTime.MinValue);
arr[1] = new HolderForDateTime(DateTime.MaxValue);
Console.WriteLine($"On Cycle {i:D3} DateTime holder allocated");
}
}
private class HolderForDateTime
{
public long StoredTicks { get; }
public DateTime DtValue { get; }
public HolderForDateTime(DateTime dt)
{
StoredTicks = dt.Ticks;
DtValue = dt;
}
}
static int year, month, day, hour, minute, second, millisec;
static long ticks;
static int[] leapYear = new int[] {2000, 2004, 2008, 2012, 2016, 2020, 2024, 2028, 2032, 2036, 2040, 2044, 2048,
2052, 2056, 2060, 2064, 2068, 2072, 2076, 2080, 2084, 2088, 2092, 2096};
// computing our constants here, as these are not accessible
// equivalent to DateTime.TicksPerSecond
const int _TicksPerSecond = 10000 * 1000;
private DateTime[] Get_ArrayOfRandomDateTimes()
{
OutputHelper.WriteLine(DateTime_btwn_1801_And_2801().ToString());
OutputHelper.WriteLine(GetLeapYearDateTime().ToString());
DateTime[] _dateTimeArr = new DateTime[] {DateTime.UtcNow,
DateTime_btwn_1801_And_2801(), DateTime_btwn_1801_And_2801(), DateTime_btwn_1801_And_2801(),
GetLeapYearDateTime(), GetLeapYearDateTime() , GetLeapYearDateTime(),
DateTime_btwn_1801_And_2801(), DateTime_btwn_1801_And_2801(), DateTime_btwn_1801_And_2801(),
GetLeapYearDateTime(), GetLeapYearDateTime(), GetLeapYearDateTime()};
return _dateTimeArr;
}
private DateTime DateTime_btwn_1801_And_2801()
{
//Generates random DateTime b/n 1000 and 9000
Random random = new Random();
year = random.Next(999) + 1801;
month = random.Next(12) + 1;
if (month == 2 && IsLeapYear(year))
day = random.Next(29) + 1;
else if (month == 2 && (!IsLeapYear(year)))
day = random.Next(28) + 1;
else if (((month <= 7) && ((month + 1) % 2 == 0)) ||
((month > 7) && ((month % 2) == 0)))
day = random.Next(31) + 1;
else
day = random.Next(30) + 1;
hour = random.Next(24);
minute = random.Next(60);
second = random.Next(60);
millisec = random.Next(1000);
return new DateTime(year, month, day, hour, minute, second, millisec);
}
private DateTime GetRandomDateTime()
{
//Generates random DateTime
Random random = new Random();
year = random.Next(1399) + 1601;
month = random.Next(12) + 1;
if (month == 2 && IsLeapYear(year))
{
day = random.Next(29) + 1;
}
else if (month == 2 && (!IsLeapYear(year)))
{
day = random.Next(28) + 1;
}
else if (((month <= 7) && ((month + 1) % 2 == 0))
|| ((month > 7) && ((month % 2) == 0)))
{
day = random.Next(31) + 1;
}
else
{
day = random.Next(30) + 1;
}
hour = random.Next(24);
minute = random.Next(60);
second = random.Next(60);
millisec = random.Next(1000);
DateTime dt = new(year, month, day, hour, minute, second, millisec);
// fill in random ticks value so we can have a fully filled ticks value
ticks = dt.Ticks + random.Next(1000_000);
dt = new(ticks);
// need to update minutesm, millisec and second because it could have changed with new ticks value
millisec = dt.Millisecond;
second = dt.Second;
minute = dt.Minute;
return dt;
}
private DateTime GetLeapYearDateTime()
{
Random random = new Random();
year = leapYear[random.Next(leapYear.Length)];
month = random.Next(12) + 1;
day = random.Next(29) + 1;
hour = random.Next(24);
minute = random.Next(60);
second = random.Next(60);
millisec = random.Next(1000);
OutputHelper.WriteLine($"{year} {month} {day} {hour} {minute} {second} {millisec}");
return new DateTime(year, month, day, hour, minute, second, millisec);
}
private bool IsLeapYear(int yr)
{
if ((yr % 400 == 0) || ((yr % 100 != 0) && (yr % 4 == 0)))
return true;
else
return false;
}
}
}

89
Tests/NFUnitTestGC/TestGCWithObjectArrays.cs Normal file
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@ -0,0 +1,89 @@
//
// Copyright (c) .NET Foundation and Contributors
// Portions Copyright (c) Microsoft Corporation. All rights reserved.
// See LICENSE file in the project root for full license information.
//
using nanoFramework.TestFramework;
using System;
namespace NFUnitTestGC
{
[TestClass]
public class TestGCWithObjectArrays
{
[TestMethod]
public void TestCompactionForNotFixedArray()
{
OutputHelper.WriteLine("Starting TestCompactionForNotFixedArray");
for (int loop = 0; loop < 10; loop++)
{
OutputHelper.WriteLine($"Starting iteration {loop}");
// First we create objects and holes that keeps some space that could be used by compaction
// Small count so compaction does not happen
object[] arrayOfArrays = new object[10];
RunAllocations(arrayOfArrays);
// This is the array that we expect to move in during compaction.
int[] testNativeBuffer = new int[100];
// Fill it, so it is not optimized out
Random random = new Random();
var baseValue = random.Next();
for (int i = 0; i < testNativeBuffer.Length; i++)
{
testNativeBuffer[i] = i * baseValue;
}
// trigger compaction
InitiateCompaction();
int index = 0;
// Check that array content is not corrupted
foreach (var item in testNativeBuffer)
{
Assert.AreEqual(index * baseValue, item, $"Array content comparison failed at position {index}. Expecting {(index * baseValue)}, found {item}");
index++;
}
OutputHelper.WriteLine("No corruption detected in array");
}
OutputHelper.WriteLine("Completed TestCompactionForNotFixedArray");
}
void RunAllocations(object[] arrObj)
{
for (int i = 1; i < arrObj.Length; i++)
{
// Creates referenced interger object, which stays in memory until InitiateCompaction exits
arrObj[i] = new int();
// Tries to create larger object that would be later hole .
// This object could be garbage collected on each "i" cycle.
int[] arr = new int[50 * i];
// Creates some usage for arr, so it is not optimized out.
arr[0] = i;
arr[1] = 50 * i;
OutputHelper.WriteLine($"On Cycle {i:D3} Array of {arr[1]} was allocated");
}
}
// This method causes compaction to occur.
// It is not so trivial as it need to fragment heap with referenced objects.
void InitiateCompaction()
{
// large count, so compaction happens during call to RunAllocations
object[] arrayOfArrays = new object[1500];
RunAllocations(arrayOfArrays);
}
}
}

109
Tests/NFUnitTestGC/TestGCWithTimeSpanArrays.cs Normal file
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//
// Copyright (c) .NET Foundation and Contributors
// Portions Copyright (c) Microsoft Corporation. All rights reserved.
// See LICENSE file in the project root for full license information.
//
using nanoFramework.TestFramework;
using System;
namespace NFUnitTestGC
{
[TestClass]
public class TestGCWithTimeSpanArrays
{
[TestMethod]
public void TestCompactionForNotFixedTimeSpanArray()
{
OutputHelper.WriteLine("Starting TestCompactionForNotFixedTimeSpanArray");
for (int loop = 0; loop < 10; loop++)
{
OutputHelper.WriteLine($"Starting iteration {loop}");
// First we create objects and holes that keeps some space that could be used by compaction.
// Small count so compaction does not happen.
HolderForTimeSpan[] arrayOfArrays = new HolderForTimeSpan[10];
RunTimeSpanAllocations(arrayOfArrays);
// This is the array that we expect to move in during compaction.
HolderForTimeSpan[] testNativeBuffer = new HolderForTimeSpan[100];
// Fill it, so it is not optimized out
for (int i = 0; i < testNativeBuffer.Length; i++)
{
testNativeBuffer[i] = new HolderForTimeSpan(GetRandomTimeSpan());
}
OutputHelper.WriteLine("Large HolderForTimeSpan array created");
OutputHelper.WriteLine("Forcing compaction to occurr");
// Causes compaction
InitiateTimeSpanCompaction();
OutputHelper.WriteLine("Compaction occurred");
OutputHelper.WriteLine("Checking arrays for corrupted data...");
int index = 0;
// Check that array content is not corrupted
foreach (HolderForTimeSpan holder in testNativeBuffer)
{
Assert.AreEqual(holder.StoredTicks, holder.TsValue.Ticks, $"Array content comparison failed at position {index}. Expecting {holder.StoredTicks}, found {holder.TsValue.Ticks}");
index++;
}
OutputHelper.WriteLine("No corruption detected in array");
}
OutputHelper.WriteLine("Completed TestCompactionForNotFixedArray");
}
private TimeSpan GetRandomTimeSpan()
{
Random rand = new();
return TimeSpan.FromTicks(rand.Next() * 1000_000);
}
// This function cause compaction to occur.
// It is not so trivial as it need to fragment heap with referenced objects.
void InitiateTimeSpanCompaction()
{
// Large count, so compaction happens during RunAllocations.
HolderForTimeSpan[] arrayOfArrays = new HolderForTimeSpan[500];
RunTimeSpanAllocations(arrayOfArrays);
}
private void RunTimeSpanAllocations(HolderForTimeSpan[] arrObj)
{
for (int i = 1; i < arrObj.Length; i++)
{
// Creates referenced object, which stays in memory until InitiateCompaction exits
arrObj[i] = new HolderForTimeSpan(GetRandomTimeSpan());
// Tries to create larger object that would be later hole
// This object could be garbage collected on each "i" cycle
HolderForTimeSpan[] arr = new HolderForTimeSpan[50 * i];
// Creates some usage for array elements, so it is not optimized out
arr[0] = new HolderForTimeSpan(TimeSpan.MinValue);
arr[1] = new HolderForTimeSpan(TimeSpan.MaxValue);
Console.WriteLine($"On Cycle {i:D3} DateTime holder allocated");
}
}
private class HolderForTimeSpan
{
public long StoredTicks { get; }
public TimeSpan TsValue { get; }
public HolderForTimeSpan(TimeSpan ts)
{
StoredTicks = ts.Ticks;
TsValue = ts;
}
}
}
}

5
Tests/NFUnitTestGC/packages.config Normal file
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@ -0,0 +1,5 @@
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="nanoFramework.CoreLibrary" version="1.14.2" targetFramework="netnano1.0" />
<package id="nanoFramework.TestFramework" version="2.1.85" targetFramework="netnano1.0" developmentDependency="true" />
</packages>

9
nanoFramework.CoreLibrary.sln
Просмотреть файл

@ -67,6 +67,8 @@ Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "NFUnitTestRecords", "Tests\
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "nanoFramework.TestAdapter", "nanoFramework.TestFramework\source\TestAdapter\nanoFramework.TestAdapter.csproj", "{6D740F0A-D435-4ACF-AD27-D702A599F229}"
EndProject
Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "NFUnitTestGC", "Tests\NFUnitTestGC\NFUnitTestGC.nfproj", "{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@ -221,6 +223,12 @@ Global
{6D740F0A-D435-4ACF-AD27-D702A599F229}.Debug|Any CPU.Build.0 = Debug|Any CPU
{6D740F0A-D435-4ACF-AD27-D702A599F229}.Release|Any CPU.ActiveCfg = Release|Any CPU
{6D740F0A-D435-4ACF-AD27-D702A599F229}.Release|Any CPU.Build.0 = Release|Any CPU
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}.Debug|Any CPU.Build.0 = Debug|Any CPU
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}.Release|Any CPU.ActiveCfg = Release|Any CPU
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}.Release|Any CPU.Build.0 = Release|Any CPU
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD}.Release|Any CPU.Deploy.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
@ -250,6 +258,7 @@ Global
{55F048B5-6739-43C5-A93D-DB61DB8E912F} = {0BAE286A-5434-4F56-A9F1-41B72056170E}
{0BE498D1-CB3E-4D1E-BA4C-2C49AE30432D} = {0BAE286A-5434-4F56-A9F1-41B72056170E}
{6D740F0A-D435-4ACF-AD27-D702A599F229} = {0BAE286A-5434-4F56-A9F1-41B72056170E}
{768BE3B6-41C6-4DFB-8A2D-443B2113F5AD} = {0BAE286A-5434-4F56-A9F1-41B72056170E}
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {8DE44407-9B41-4459-97D2-FCE54B1F4300}