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