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//
// System.Threading.Mutex.cs
//
// Author:
// Dick Porter (dick@ximian.com)
// Veronica De Santis (veron78@interfree.it)
//
// (C) Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Runtime.CompilerServices;
using System.Security.Permissions;
#if NET_2_0
using System.Runtime.ConstrainedExecution;
using System.IO;
using System.Runtime.InteropServices;
#if !NET_2_1
using System.Security.AccessControl;
#endif
#endif
namespace System.Threading
{
#if NET_2_0
[ComVisible (true)]
#endif
public sealed class Mutex : WaitHandle
{
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern IntPtr CreateMutex_internal(
bool initiallyOwned,
string name,
out bool created);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern bool ReleaseMutex_internal(IntPtr handle);
#if NET_2_0 && !NET_2_1
[MethodImplAttribute (MethodImplOptions.InternalCall)]
private static extern IntPtr OpenMutex_internal (string name, MutexRights rights, out MonoIOError error);
private Mutex (IntPtr handle)
{
Handle = handle;
}
#endif
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
#endif
public Mutex() {
bool created;
Handle=CreateMutex_internal(false, null, out created);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
#endif
public Mutex(bool initiallyOwned) {
bool created;
Handle=CreateMutex_internal(initiallyOwned, null,
out created);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
#endif
[SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
public Mutex (bool initiallyOwned, string name)
{
bool created;
Handle = CreateMutex_internal (initiallyOwned, name, out created);
}
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
#endif
[SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
public Mutex (bool initiallyOwned, string name, out bool createdNew)
{
Handle = CreateMutex_internal (initiallyOwned, name, out createdNew);
}
#if NET_2_0 && !NET_2_1
[MonoTODO ("Implement MutexSecurity")]
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
public Mutex (bool initiallyOwned, string name, out bool createdNew, MutexSecurity mutexSecurity)
{
Handle = CreateMutex_internal (initiallyOwned, name, out createdNew);
}
public MutexSecurity GetAccessControl ()
{
throw new NotImplementedException ();
}
public static Mutex OpenExisting (string name)
{
return(OpenExisting (name, MutexRights.Synchronize |
MutexRights.Modify));
}
public static Mutex OpenExisting (string name,
MutexRights rights)
{
if (name == null) {
throw new ArgumentNullException ("name");
}
if ((name.Length == 0) ||
(name.Length > 260)) {
throw new ArgumentException ("name", Locale.GetText ("Invalid length [1-260]."));
}
MonoIOError error;
IntPtr handle = OpenMutex_internal (name, rights,
out error);
if (handle == (IntPtr)null) {
if (error == MonoIOError.ERROR_FILE_NOT_FOUND) {
throw new WaitHandleCannotBeOpenedException (Locale.GetText ("Named Mutex handle does not exist: ") + name);
} else if (error == MonoIOError.ERROR_ACCESS_DENIED) {
throw new UnauthorizedAccessException ();
} else {
throw new IOException (Locale.GetText ("Win32 IO error: ") + error.ToString ());
}
}
return(new Mutex (handle));
}
#endif
#if NET_2_0
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
#endif
public void ReleaseMutex() {
bool success = ReleaseMutex_internal(Handle);
if (!success) {
throw new ApplicationException ("Mutex is not owned");
}
}
#if NET_2_0 && !NET_2_1
public void SetAccessControl (MutexSecurity mutexSecurity)
{
throw new NotImplementedException ();
}
#endif
}
}
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