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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.IO;
using Microsoft.Win32;
using Microsoft.Win32.SafeHandles;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace System.Threading
{
/// <summary>
/// Synchronization primitive that can also be used for interprocess synchronization
/// </summary>
public sealed partial class Mutex : WaitHandle
{
public Mutex(bool initiallyOwned, string name, out bool createdNew)
{
CreateMutexCore(initiallyOwned, name, out createdNew);
}
public Mutex(bool initiallyOwned, string name)
{
CreateMutexCore(initiallyOwned, name, out _);
}
public Mutex(bool initiallyOwned)
{
CreateMutexCore(initiallyOwned, null, out _);
}
public Mutex()
{
CreateMutexCore(false, null, out _);
}
private Mutex(SafeWaitHandle handle)
{
SafeWaitHandle = handle;
}
public static Mutex OpenExisting(string name)
{
switch (OpenExistingWorker(name, out Mutex result))
{
case OpenExistingResult.NameNotFound:
throw new WaitHandleCannotBeOpenedException();
case OpenExistingResult.NameInvalid:
throw new WaitHandleCannotBeOpenedException(SR.Format(SR.Threading_WaitHandleCannotBeOpenedException_InvalidHandle, name));
case OpenExistingResult.PathNotFound:
throw new DirectoryNotFoundException(SR.Format(SR.IO_PathNotFound_Path, name));
default:
return result;
}
}
public static bool TryOpenExisting(string name, out Mutex result) =>
OpenExistingWorker(name, out result) == OpenExistingResult.Success;
}
}
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