84 lines
2.8 KiB
C#
84 lines
2.8 KiB
C#
//------------------------------------------------------------------------------
|
|
// <copyright file="RequestTimeoutManager.cs" company="Microsoft">
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|
// </copyright>
|
|
//------------------------------------------------------------------------------
|
|
|
|
/*
|
|
* Request timeout manager -- implements the request timeout mechanism
|
|
*/
|
|
namespace System.Web {
|
|
using System.Threading;
|
|
using System.Collections;
|
|
using System.Web.Hosting;
|
|
using System.Web.Util;
|
|
|
|
internal class IdleTimeoutMonitor {
|
|
|
|
private TimeSpan _idleTimeout; // the timeout value
|
|
private DateTime _lastEvent; // idle since this time
|
|
private Timer _timer;
|
|
private readonly TimeSpan _timerPeriod = new TimeSpan(0, 0, 30); // 30 secs
|
|
|
|
internal IdleTimeoutMonitor(TimeSpan timeout) {
|
|
_idleTimeout = timeout;
|
|
_timer = new Timer(new TimerCallback(this.TimerCompletionCallback), null, _timerPeriod, _timerPeriod);
|
|
_lastEvent = DateTime.UtcNow;
|
|
}
|
|
|
|
internal void Stop() {
|
|
// stop the timer
|
|
if (_timer != null) {
|
|
lock (this) {
|
|
if (_timer != null) {
|
|
((IDisposable)_timer).Dispose();
|
|
_timer = null;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
internal DateTime LastEvent { // thread-safe property
|
|
get {
|
|
DateTime t;
|
|
lock (this) { t = _lastEvent; }
|
|
return t;
|
|
}
|
|
|
|
set {
|
|
lock (this) { _lastEvent = value; }
|
|
}
|
|
}
|
|
|
|
private void TimerCompletionCallback(Object state) {
|
|
// user idle timer to trim the free list of app instanced
|
|
HttpApplicationFactory.TrimApplicationInstances();
|
|
|
|
// no idle timeout
|
|
if (_idleTimeout == TimeSpan.MaxValue)
|
|
return;
|
|
|
|
// don't do idle timeout if already shutting down
|
|
if (HostingEnvironment.ShutdownInitiated)
|
|
return;
|
|
|
|
// check if there are active requests
|
|
if (HostingEnvironment.BusyCount != 0)
|
|
return;
|
|
|
|
// check if enough time passed
|
|
if (DateTime.UtcNow <= LastEvent.Add(_idleTimeout))
|
|
return;
|
|
|
|
// check if debugger is attached
|
|
if (System.Diagnostics.Debugger.IsAttached)
|
|
return;
|
|
|
|
// shutdown
|
|
HttpRuntime.SetShutdownReason(ApplicationShutdownReason.IdleTimeout,
|
|
SR.GetString(SR.Hosting_Env_IdleTimeout));
|
|
HostingEnvironment.InitiateShutdownWithoutDemand();
|
|
}
|
|
}
|
|
}
|