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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.
namespace System.Diagnostics
{
public partial class DebugProvider
{
public static void FailCore(string stackTrace, string message, string detailMessage, string errorSource)
{
if (s_FailCore != null)
{
s_FailCore(stackTrace, message, detailMessage, errorSource);
return;
}
if (Debugger.IsAttached)
{
Debugger.Break();
}
else
{
// In Core, we do not show a dialog.
// Fail in order to avoid anyone catching an exception and masking
// an assert failure.
DebugAssertException ex;
if (message == string.Empty)
{
ex = new DebugAssertException(stackTrace);
}
else if (detailMessage == string.Empty)
{
ex = new DebugAssertException(message, stackTrace);
}
else
{
ex = new DebugAssertException(message, detailMessage, stackTrace);
}
Environment.FailFast(ex.Message, ex, errorSource);
}
}
private static readonly object s_ForLock = new object();
public static void WriteCore(string message)
{
if (s_WriteCore != null)
{
s_WriteCore(message);
return;
}
// really huge messages mess up both VS and dbmon, so we chop it up into
// reasonable chunks if it's too big. This is the number of characters
// that OutputDebugstring chunks at.
const int WriteChunkLength = 4091;
// We don't want output from multiple threads to be interleaved.
lock (s_ForLock)
{
if (message == null || message.Length <= WriteChunkLength)
{
WriteToDebugger(message);
}
else
{
int offset;
for (offset = 0; offset < message.Length - WriteChunkLength; offset += WriteChunkLength)
{
WriteToDebugger(message.Substring(offset, WriteChunkLength));
}
WriteToDebugger(message.Substring(offset));
}
}
}
private static void WriteToDebugger(string message)
{
if (Debugger.IsLogging())
{
Debugger.Log(0, null, message);
}
else
{
Interop.Kernel32.OutputDebugString(message ?? string.Empty);
}
}
}
}
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