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using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
{
/// <summary>
/// This class does maintenance on script engine.
/// </summary>
public class MaintenanceThread
{
public ScriptEngine m_ScriptEngine;
private int MaintenanceLoopms;
public MaintenanceThread(ScriptEngine _ScriptEngine)
{
m_ScriptEngine = _ScriptEngine;
ReadConfig();
// Start maintenance thread
StartMaintenanceThread();
}
~MaintenanceThread()
{
StopMaintenanceThread();
}
private void ReadConfig()
{
MaintenanceLoopms = m_ScriptEngine.ScriptConfigSource.GetInt("MaintenanceLoopms", 50);
}
#region " Maintenance thread "
/// <summary>
/// Maintenance thread. Enforcing max execution time for example.
/// </summary>
public static Thread MaintenanceThreadThread;
/// <summary>
/// Starts maintenance thread
/// </summary>
private void StartMaintenanceThread()
{
StopMaintenanceThread();
MaintenanceThreadThread = new Thread(MaintenanceLoop);
MaintenanceThreadThread.Name = "ScriptMaintenanceThread";
MaintenanceThreadThread.IsBackground = true;
MaintenanceThreadThread.Start();
}
/// <summary>
/// Stops maintenance thread
/// </summary>
private void StopMaintenanceThread()
{
try
{
if (MaintenanceThreadThread != null)
{
if (MaintenanceThreadThread.IsAlive)
{
MaintenanceThreadThread.Abort();
}
}
}
catch (Exception ex)
{
m_ScriptEngine.Log.Error("EventQueueManager", "Exception stopping maintenence thread: " + ex.ToString());
}
}
/// <summary>
/// A thread should run in this loop and check all running scripts
/// </summary>
public void MaintenanceLoop()
{
try
{
long Last_maxFunctionExecutionTimens = 0;// DateTime.Now.Ticks;
long Last_ReReadConfigFilens = DateTime.Now.Ticks;
while (true)
{
System.Threading.Thread.Sleep(MaintenanceLoopms); // Sleep
// Re-reading config every x seconds?
if (m_ScriptEngine.ReReadConfigFileSeconds > 0)
{
// Check if its time to re-read config
if (DateTime.Now.Ticks - Last_ReReadConfigFilens > m_ScriptEngine.ReReadConfigFilens)
{
// Its time to re-read config file
m_ScriptEngine.ConfigSource.Reload(); // Re-read config
Last_ReReadConfigFilens = DateTime.Now.Ticks; // Reset time
}
}
// Adjust number of running script threads if not correct
if (m_ScriptEngine.m_EventQueueManager.eventQueueThreads.Count != m_ScriptEngine.m_EventQueueManager.numberOfThreads)
{
m_ScriptEngine.m_EventQueueManager.AdjustNumberOfScriptThreads();
}
// Check if any script has exceeded its max execution time
if (m_ScriptEngine.m_EventQueueManager.EnforceMaxExecutionTime)
{
if (DateTime.Now.Ticks - Last_maxFunctionExecutionTimens > m_ScriptEngine.m_EventQueueManager.maxFunctionExecutionTimens)
{
m_ScriptEngine.m_EventQueueManager.CheckScriptMaxExecTime(); // Do check
Last_maxFunctionExecutionTimens = DateTime.Now.Ticks; // Reset time
}
}
}
}
catch (ThreadAbortException tae)
{
}
}
#endregion
}
}
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