OpenSim-Test/OpenSim/Region/PhysicsModules/SharedBase/CollisionLocker.cs

/*
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 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the OpenSimulator Project nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Collections.Generic;

namespace OpenSim.Region.PhysicsModules.SharedBase
{
    public class CollisionLocker
    {
        private List<IntPtr> worldlock = new List<IntPtr>();

        public CollisionLocker()
        {

        }

        public void dlock(IntPtr world)
        {
            lock (worldlock)
            {
                worldlock.Add(world);
            }

        }

        public void dunlock(IntPtr world)
        {
            lock (worldlock)
            {
                worldlock.Remove(world);
            }
        }

        public bool lockquery()
        {
            return (worldlock.Count > 0);
        }

        public void drelease(IntPtr world)
        {
            lock (worldlock)
            {
                if (worldlock.Contains(world))
                    worldlock.Remove(world);
            }
        }
    }
}