Move thread management from sgen to utils. Move smr from MonoInternalThread to thread...

[mono.git] / mcs / class / corlib / System.Threading / LockQueue.cs

diff --git a/mcs/class/corlib/System.Threading/LockQueue.cs b/mcs/class/corlib/System.Threading/LockQueue.cs
index a853a11cd1de5df7238598ab102ff3bed3f930fe..96cfa520ec955db2bf4b1c2d0ca8e45485925456 100644 (file)
--- a/mcs/class/corlib/System.Threading/LockQueue.cs
+++ b/mcs/class/corlib/System.Threading/LockQueue.cs
@@ -7,6 +7,29 @@
 // (C) 2004 Novell, Inc (http://www.novell.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;
 
@@ -16,27 +39,36 @@ namespace System.Threading {
        internal class LockQueue {
 
                private ReaderWriterLock rwlock;
+               private int lockCount = 0;
 
                public LockQueue (ReaderWriterLock rwlock)
                {
-                       lock (this) this.rwlock = rwlock;
+                       this.rwlock = rwlock;
                }
 
-               public void Wait (int timeout)
+               public bool Wait (int timeout)
                {
                        bool _lock = false;
 
                        try {
                                lock (this) {
+                                       lockCount++;
                                        Monitor.Exit (rwlock);
                                        _lock = true;
-                                       Monitor.Wait (this, timeout);
+                                       return Monitor.Wait (this, timeout);
                                }
                        } finally {
-                               if (_lock)
-                                       lock (this) Monitor.Enter (rwlock);
+                               if (_lock) {
+                                       Monitor.Enter (rwlock);
+                                       lockCount--;
+                               }
                        }
                }
+               
+               public bool IsEmpty
+               {
+                       get { lock (this) return (lockCount == 0); }
+               }
 
                public void Pulse ()
                {