// (C) Ximian, Inc. http://www.ximian.com
//
+//
+// Copyright (C) 2004 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.Runtime.Remoting.Contexts;
+using System.Runtime.ConstrainedExecution;
+using System.Runtime.InteropServices;
namespace System.Threading
{
- public sealed class Monitor
+ [ComVisible (true)]
+ public static class Monitor
{
- public static void Enter(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- if(obj.GetType().IsValueType==true) {
- throw new ArgumentException("Value type");
- }
- // FIXME
- }
+ // Grabs the mutex on object 'obj', with a maximum
+ // wait time 'ms' but doesn't block - if it can't get
+ // the lock it returns false, true if it can
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static bool Monitor_try_enter(object obj, int ms);
- public static void Exit(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- if(obj.GetType().IsValueType==true) {
- throw new ArgumentException("Value type");
- }
- // FIXME
- }
+ // Enter/Exit are implemented directly as icalls for performance reasons
+
+ // Acquires the mutex on object 'obj'
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static void Enter(object obj);
+
+ // Releases the mutex on object 'obj'
+ [ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static void Exit(object obj);
+
+ // Signals one of potentially many objects waiting on
+ // object 'obj'
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static void Monitor_pulse(object obj);
+
+ // Checks whether object 'obj' is currently synchronised
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static bool Monitor_test_synchronised(object obj);
public static void Pulse(object obj) {
if(obj==null) {
throw new ArgumentNullException("obj");
}
- // FIXME
+ if(Monitor_test_synchronised(obj)==false) {
+ throw new SynchronizationLockException("Object is not synchronized");
+ }
+
+ Monitor_pulse(obj);
}
+ // Signals all of potentially many objects waiting on
+ // object 'obj'
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static void Monitor_pulse_all(object obj);
+
public static void PulseAll(object obj) {
if(obj==null) {
throw new ArgumentNullException("obj");
}
- // FIXME
+ if(Monitor_test_synchronised(obj)==false) {
+ throw new SynchronizationLockException("Object is not synchronized");
+ }
+
+ Monitor_pulse_all(obj);
}
- public static bool TryEnter(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- if(obj.GetType().IsValueType==true) {
- throw new ArgumentException("Value type");
- }
-
- // FIXME
- return(false);
+ public static bool TryEnter (object obj)
+ {
+ return TryEnter (obj, 0);
}
- public static bool TryEnter(object obj, int millisecondsTimeout) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- if(obj.GetType().IsValueType==true) {
- throw new ArgumentException("Value type");
- }
- if(millisecondsTimeout<0) {
- throw new ArgumentException("millisecondsTimeout negative");
+ public static bool TryEnter (object obj, int millisecondsTimeout)
+ {
+ if (obj == null)
+ throw new ArgumentNullException ("obj");
+
+ if (millisecondsTimeout == Timeout.Infinite) {
+ Enter (obj);
+ return true;
}
- // FIXME
- return(false);
+
+ if (millisecondsTimeout < 0)
+ throw new ArgumentException ("negative value for millisecondsTimeout", "millisecondsTimeout");
+
+ return Monitor_try_enter (obj, millisecondsTimeout);
}
- public static bool TryEnter(object obj, TimeSpan timeout) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- if(obj.GetType().IsValueType==true) {
- throw new ArgumentException("Value type");
- }
- if(timeout.Milliseconds < 0 || timeout.Milliseconds > Int32.MaxValue) {
- throw new ArgumentOutOfRangeException("timeout out of range");
- }
+ public static bool TryEnter (object obj, TimeSpan timeout)
+ {
+ long ms = (long) timeout.TotalMilliseconds;
+ if (ms < Timeout.Infinite || ms > Int32.MaxValue)
+ throw new ArgumentOutOfRangeException ("timeout", "timeout out of range");
- // FIXME
- return(false);
+ return TryEnter (obj, (int) ms);
}
- public static bool Wait(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- // FIXME
- return(false);
+ // Waits for a signal on object 'obj' with maximum
+ // wait time 'ms'. Returns true if the object was
+ // signalled, false if it timed out
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ private extern static bool Monitor_wait(object obj, int ms);
+
+ public static bool Wait (object obj)
+ {
+ return Wait (obj, Timeout.Infinite);
}
- public static bool Wait(object obj, int millisecondsTimeout) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- // FIXME
- return(false);
+ public static bool Wait (object obj, int millisecondsTimeout)
+ {
+ if (obj == null)
+ throw new ArgumentNullException ("obj");
+
+ if (millisecondsTimeout < Timeout.Infinite)
+ throw new ArgumentOutOfRangeException ("millisecondsTimeout", "timeout out of range");
+
+ if (!Monitor_test_synchronised (obj))
+ throw new SynchronizationLockException ("Object is not synchronized");
+
+ return Monitor_wait (obj, millisecondsTimeout);
}
- public static bool Wait(object obj, TimeSpan timeout) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- // LAMESPEC: says to throw ArgumentException too
- if(timeout.Milliseconds < 0 || timeout.Milliseconds > Int32.MaxValue) {
- throw new ArgumentOutOfRangeException("timeout out of range");
- }
-
- // FIXME
- return(false);
+ public static bool Wait (object obj, TimeSpan timeout)
+ {
+ long ms = (long) timeout.TotalMilliseconds;
+ if (ms < Timeout.Infinite || ms > Int32.MaxValue)
+ throw new ArgumentOutOfRangeException ("timeout", "timeout out of range");
+
+ return Wait (obj, (int) ms);
}
public static bool Wait(object obj, int millisecondsTimeout, bool exitContext) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
+ try {
+ if (exitContext) SynchronizationAttribute.ExitContext ();
+ return Wait (obj, millisecondsTimeout);
+ }
+ finally {
+ if (exitContext) SynchronizationAttribute.EnterContext ();
}
- // FIXME
- return(false);
}
public static bool Wait(object obj, TimeSpan timeout, bool exitContext) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
+ try {
+ if (exitContext) SynchronizationAttribute.ExitContext ();
+ return Wait (obj, timeout);
}
- // LAMESPEC: says to throw ArgumentException too
- if(timeout.Milliseconds < 0 || timeout.Milliseconds > Int32.MaxValue) {
- throw new ArgumentOutOfRangeException("timeout out of range");
+ finally {
+ if (exitContext) SynchronizationAttribute.EnterContext ();
}
-
- // FIXME
- return(false);
}
+
+#if NET_4_0 || MOONLIGHT
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ extern static void try_enter_with_atomic_var (object obj, int millisecondsTimeout, ref bool lockTaken);
+
+ public static void Enter (object obj, ref bool lockTaken)
+ {
+ TryEnter (obj, Timeout.Infinite, ref lockTaken);
+ }
+
+ public static void TryEnter (object obj, ref bool lockTaken)
+ {
+ TryEnter (obj, 0, ref lockTaken);
+ }
+
+ public static void TryEnter (object obj, TimeSpan timeout, ref bool lockTaken)
+ {
+ long ms = (long) timeout.TotalMilliseconds;
+ if (ms < Timeout.Infinite || ms > Int32.MaxValue)
+ throw new ArgumentOutOfRangeException ("timeout", "timeout out of range");
+ TryEnter (obj, (int)ms, ref lockTaken);
+ }
+
+ public static void TryEnter (object obj, int millisecondsTimeout, ref bool lockTaken)
+ {
+ if (obj == null)
+ throw new ArgumentNullException ("obj");
+ if (lockTaken)
+ throw new ArgumentException ("lockTaken");
+
+ if (millisecondsTimeout < 0 && millisecondsTimeout != Timeout.Infinite)
+ throw new ArgumentException ("negative value for millisecondsTimeout", "millisecondsTimeout");
+
+ try_enter_with_atomic_var (obj, millisecondsTimeout, ref lockTaken);
+ }
+
+#endif
}
}
projects / mono.git / blobdiff