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/*
* Copyright (c) Contributors, http://opensimulator.org/
* 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:
* * Redistributions of source code must retain the above copyright
* 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 OpenSim 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;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading;
namespace OpenSim.Framework
{
public static class ThreadTracker
{
private static readonly long ThreadTimeout = 30 * 10000000;
public static List<ThreadTrackerItem> m_Threads;
public static Thread ThreadTrackerThread;
static ThreadTracker()
{
#if DEBUG
m_Threads = new List<ThreadTrackerItem>();
ThreadTrackerThread = new Thread(ThreadTrackerThreadLoop);
ThreadTrackerThread.Name = "ThreadTrackerThread";
ThreadTrackerThread.IsBackground = true;
ThreadTrackerThread.Priority = ThreadPriority.BelowNormal;
ThreadTrackerThread.Start();
Add(ThreadTrackerThread);
#endif
}
private static void ThreadTrackerThreadLoop()
{
try
{
while (true)
{
Thread.Sleep(5000);
CleanUp();
}
}
catch (Exception e)
{
m_log.ErrorFormat(
"[THREAD TRACKER]: Thread tracker cleanup thread terminating with exception. Please report this error. Exception is {0}",
e);
}
}
public static void Add(Thread thread)
{
#if DEBUG
lock (m_Threads)
{
ThreadTrackerItem tti = new ThreadTrackerItem();
tti.Thread = thread;
tti.LastSeenActive = DateTime.Now.Ticks;
m_Threads.Add(tti);
}
#endif
}
public static void Remove(Thread thread)
{
#if DEBUG
lock (m_Threads)
{
foreach (ThreadTrackerItem tti in new ArrayList(m_Threads))
{
if (tti.Thread == thread)
m_Threads.Remove(tti);
}
}
#endif
}
public static void CleanUp()
{
lock (m_Threads)
{
foreach (ThreadTrackerItem tti in new ArrayList(m_Threads))
{
if (tti.Thread.IsAlive)
{
// Its active
tti.LastSeenActive = DateTime.Now.Ticks;
}
else
{
// Its not active -- if its expired then remove it
if (tti.LastSeenActive + ThreadTimeout < DateTime.Now.Ticks)
m_Threads.Remove(tti);
}
}
}
}
public static List<Thread> GetThreads()
{
if (m_Threads == null)
return null;
List<Thread> threads = new List<Thread>();
lock (m_Threads)
{
foreach (ThreadTrackerItem tti in new ArrayList(m_Threads))
{
threads.Add(tti.Thread);
}
}
return threads;
}
#region Nested type: ThreadTrackerItem
public class ThreadTrackerItem
{
public long LastSeenActive;
public Thread Thread;
}
#endregion
}
}
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