//
// System.Threading.LockQueue
//
// Author(s):
// Jackson Harper (jackson@ximian.com)
//
// (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;
namespace System.Threading{
// Used for queueing on a reader writer lock
internal class LockQueue {
private ReaderWriterLock rwlock;
private int lockCount = 0;
public LockQueue (ReaderWriterLock rwlock)
{
this.rwlock = rwlock;
}
public bool Wait (int timeout)
{
bool _lock = false;
try {
lock (this) {
lockCount++;
Monitor.Exit (rwlock);
_lock = true;
return Monitor.Wait (this, timeout);
}
} finally {
if (_lock) {
Monitor.Enter (rwlock);
lockCount--;
}
}
}
public bool IsEmpty
{
get { lock (this) return (lockCount == 0); }
}
public void Pulse ()
{
lock (this) Monitor.Pulse (this);
}
public void PulseAll ()
{
lock (this) Monitor.PulseAll (this);
}
}
}
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