using System.Runtime.CompilerServices;
using System.Runtime.Remoting.Contexts;
-
-#if NET_2_0
using System.Runtime.ConstrainedExecution;
-#endif
+using System.Runtime.InteropServices;
namespace System.Threading
{
- public sealed class Monitor
+ [ComVisible (true)]
+ public static class Monitor
{
- private Monitor () {}
-
// 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 Enter(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- //if(obj.GetType().IsValueType==true) {
- // throw new ArgumentException("Value type");
- //}
-
- Monitor_try_enter(obj, Timeout.Infinite);
- }
+ // Enter/Exit are implemented directly as icalls for performance reasons
- // Releases the mutex on object 'obj'
+ // Acquires the mutex on object 'obj'
[MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern static void Monitor_exit(object obj);
+ public extern static void Enter(object obj);
-#if NET_2_0
+ // Releases the mutex on object 'obj'
[ReliabilityContractAttribute (Consistency.WillNotCorruptState, Cer.Success)]
-#endif
- public static void Exit(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- //if(obj.GetType().IsValueType==true) {
- // throw new ArgumentException("Value type");
- //}
-
- Monitor_exit(obj);
- }
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ public extern static void Exit(object obj);
// Signals one of potentially many objects waiting on
// object 'obj'
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");
- //}
-
- return(Monitor_try_enter(obj, 0));
+ 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");
- //}
-
- // LAMESPEC: should throw an exception when ms<0, but
- // Timeout.Infinite is -1
- if(millisecondsTimeout == Timeout.Infinite) {
- Enter(obj);
- return(true);
- }
-
- if(millisecondsTimeout<0) {
- throw new ArgumentException("millisecondsTimeout", "negative value for millisecondsTimeout");
- }
-
- return(Monitor_try_enter(obj, millisecondsTimeout));
- }
+ public static bool TryEnter (object obj, int millisecondsTimeout)
+ {
+ if (obj == null)
+ throw new ArgumentNullException ("obj");
- public static bool TryEnter(object obj, TimeSpan timeout) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
+ if (millisecondsTimeout == Timeout.Infinite) {
+ Enter (obj);
+ return true;
}
- //if(obj.GetType().IsValueType==true) {
- // throw new ArgumentException("Value type");
- //}
- // LAMESPEC: should throw an exception when ms<0, but
- // Timeout.Infinite is -1
- int ms=Convert.ToInt32(timeout.TotalMilliseconds);
+ if (millisecondsTimeout < 0)
+ throw new ArgumentException ("negative value for millisecondsTimeout", "millisecondsTimeout");
- if(ms == Timeout.Infinite) {
- Enter(obj);
- return(true);
- }
+ return Monitor_try_enter (obj, millisecondsTimeout);
+ }
- if(ms < 0 || ms > Int32.MaxValue) {
- throw new ArgumentOutOfRangeException("timeout", "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");
- return(Monitor_try_enter(obj, ms));
+ return TryEnter (obj, (int) ms);
}
// Waits for a signal on object 'obj' with maximum
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private extern static bool Monitor_wait(object obj, int ms);
- public static bool Wait(object obj) {
- if(obj==null) {
- throw new ArgumentNullException("obj");
- }
- if(Monitor_test_synchronised(obj)==false) {
- throw new SynchronizationLockException("Object is not synchronized");
- }
-
- return(Monitor_wait(obj, Timeout.Infinite));
+ 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");
- }
- if(Monitor_test_synchronised(obj)==false) {
- throw new SynchronizationLockException("Object is not synchronized");
- }
- if (millisecondsTimeout < 0 && millisecondsTimeout != Timeout.Infinite)
+ 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");
- return(Monitor_wait(obj, millisecondsTimeout));
+ 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
- int ms=Convert.ToInt32(timeout.TotalMilliseconds);
-
- if((ms < 0 && ms != Timeout.Infinite) || ms > Int32.MaxValue) {
- throw new ArgumentOutOfRangeException("timeout", "timeout out of range");
- }
- if(Monitor_test_synchronised(obj)==false) {
- throw new SynchronizationLockException("Object is not synchronized");
- }
+ 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(Monitor_wait(obj, ms));
+ return Wait (obj, (int) ms);
}
public static bool Wait(object obj, int millisecondsTimeout, bool exitContext) {
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
+ if (exitContext) {
+#if MONOTOUCH
+ throw new NotSupportedException ("exitContext == true is not supported");
+#else
+ SynchronizationAttribute.ExitContext ();
+#endif
+ }
return Wait (obj, millisecondsTimeout);
}
finally {
public static bool Wait(object obj, TimeSpan timeout, bool exitContext) {
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
+ if (exitContext) {
+#if MONOTOUCH
+ throw new NotSupportedException ("exitContext == true is not supported");
+#else
+ SynchronizationAttribute.ExitContext ();
+#endif
+ }
return Wait (obj, timeout);
}
finally {
if (exitContext) SynchronizationAttribute.EnterContext ();
}
}
+
+#if NET_4_0
+ [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
+
+#if NET_4_5
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ extern static bool Monitor_test_owner (object obj);
+
+ public static bool IsEntered (object obj)
+ {
+ return Monitor_test_owner(obj);
+ }
+#endif
}
}
projects / mono.git / blobdiff