99 lines
2.9 KiB
C#
99 lines
2.9 KiB
C#
//
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// HandleCollector.cs
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//
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// Author: Atsushi Enomoto <atsushi@ximian.com>
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//
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// Copyright (C) 2007 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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namespace System.Runtime.InteropServices
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{
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public sealed class HandleCollector
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{
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int count;
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readonly int init, max;
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readonly string name;
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DateTime previous_collection = DateTime.MinValue;
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public HandleCollector (string name, int initialThreshold)
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: this (name, initialThreshold, int.MaxValue)
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{
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}
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public HandleCollector (string name, int initialThreshold, int maximumThreshold)
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{
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if (initialThreshold < 0)
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throw new ArgumentOutOfRangeException ("initialThreshold", "initialThreshold must not be less than zero");
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if (maximumThreshold < 0)
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throw new ArgumentOutOfRangeException ("maximumThreshold", "maximumThreshold must not be less than zero");
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if (maximumThreshold < initialThreshold)
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throw new ArgumentException ("maximumThreshold must not be less than initialThreshold");
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this.name = name;
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init = initialThreshold;
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max = maximumThreshold;
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}
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public int Count {
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get { return count; }
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}
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public int InitialThreshold {
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get { return init; }
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}
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public int MaximumThreshold {
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get { return max; }
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}
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public string Name {
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get { return name; }
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}
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public void Add ()
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{
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/* NET_3_5
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if (++count >= max)
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GC.Collect (GC.MaxGeneration, GCCollectionMode.Forced);
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else if (count >= init)
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GC.Collect (GC.MaxGeneration, GCCollectionMode.Optimized);
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*/
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if (++count >= max)
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GC.Collect (GC.MaxGeneration);
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else if (count >= init && DateTime.Now - previous_collection > TimeSpan.FromSeconds (5)) { // some arbitrary criteria
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GC.Collect (GC.MaxGeneration);
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previous_collection = DateTime.Now;
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}
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}
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public void Remove ()
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{
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if (count == 0)
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throw new InvalidOperationException ("Cannot call Remove method when Count is 0");
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count--;
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}
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}
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}
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