using System.Runtime.CompilerServices;
using System.Security.Permissions;
-#if NET_2_0
using System.Runtime.ConstrainedExecution;
-#endif
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Security.AccessControl;
namespace System.Threading
{
+ [ComVisible (true)]
public sealed class Mutex : WaitHandle
{
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private static extern bool ReleaseMutex_internal(IntPtr handle);
+
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern IntPtr CreateMutex_internal(
bool initiallyOwned,
string name,
out bool created);
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private static extern void ReleaseMutex_internal(IntPtr handle);
+ [MethodImplAttribute (MethodImplOptions.InternalCall)]
+ private static extern IntPtr OpenMutex_internal (string name, MutexRights rights, out MonoIOError error);
+ private Mutex (IntPtr handle)
+ {
+ Handle = handle;
+ }
+
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
public Mutex() {
bool created;
Handle=CreateMutex_internal(false, null, out created);
}
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
public Mutex(bool initiallyOwned) {
bool created;
out created);
}
+#if !MOBILE
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
[SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
public Mutex (bool initiallyOwned, string name)
{
Handle = CreateMutex_internal (initiallyOwned, name, out created);
}
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
[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
+ [MonoTODO ("Use MutexSecurity in CreateMutex_internal")]
+ [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 ()
+ {
+ return new MutexSecurity (SafeWaitHandle,
+ AccessControlSections.Owner |
+ AccessControlSections.Group |
+ AccessControlSections.Access);
+ }
+
+ 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));
+ }
+
+ public static bool TryOpenExisting (string name, out Mutex result)
+ {
+ return TryOpenExisting (name, MutexRights.Synchronize | MutexRights.Modify, out result);
+ }
+
+ public static bool TryOpenExisting (string name, MutexRights rights, out Mutex result)
+ {
+ 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) {
+ result = null;
+ return false;
+ }
+
+ result = new Mutex (handle);
+ return true;
+ }
+#else
+ public Mutex (bool initiallyOwned, string name)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public Mutex (bool initiallyOwned, string name, out bool createdNew)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public Mutex (bool initiallyOwned, string name, out bool createdNew, MutexSecurity mutexSecurity)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public static Mutex OpenExisting (string name)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public static Mutex OpenExisting (string name, MutexRights rights)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public static bool TryOpenExisting (string name, out Mutex result)
+ {
+ throw new NotSupportedException ();
+ }
+
+ public static bool TryOpenExisting (string name, MutexRights rights, out Mutex result)
+ {
+ throw new NotSupportedException ();
+ }
+#endif
+
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.MayFail)]
-#endif
public void ReleaseMutex() {
- ReleaseMutex_internal(Handle);
+ bool success = ReleaseMutex_internal(Handle);
+ if (!success) {
+ throw new ApplicationException ("Mutex is not owned");
+ }
}
+
+#if !NET_2_1
+ public void SetAccessControl (MutexSecurity mutexSecurity)
+ {
+ if (null == mutexSecurity)
+ throw new ArgumentNullException ("mutexSecurity");
+
+ mutexSecurity.PersistModifications (SafeWaitHandle);
+ }
+#endif
}
}