//
// HandleCollector.cs
//
// Author: Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2007 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
#if NET_2_0
using System;
namespace System.Runtime.InteropServices{
public sealed class HandleCollector
{
int count;
readonly int init, max;
readonly string name;
DateTime previous_collection = DateTime.MinValue;
public HandleCollector (string name, int initialThreshold)
: this (name, initialThreshold, int.MaxValue)
{
}
public HandleCollector (string name, int initialThreshold, int maximumThreshold)
{
if (initialThreshold < 0)
throw new ArgumentOutOfRangeException ("initialThreshold", "initialThreshold must not be less than zero");
if (maximumThreshold < 0)
throw new ArgumentOutOfRangeException ("maximumThreshold", "maximumThreshold must not be less than zero");
if (maximumThreshold < initialThreshold)
throw new ArgumentException ("maximumThreshold must not be less than initialThreshold");
this.name = name;
init = initialThreshold;
max = maximumThreshold;
}
public int Count {
get { return count; }
}
public int InitialThreshold {
get { return init; }
}
public int MaximumThreshold {
get { return max; }
}
public string Name {
get { return name; }
}
public void Add ()
{
/* NET_3_5
if (++count >= max)
GC.Collect (GC.MaxGeneration, GCCollectionMode.Forced);
else if (count >= init)
GC.Collect (GC.MaxGeneration, GCCollectionMode.Optimized);
*/
if (++count >= max)
GC.Collect (GC.MaxGeneration);
else if (count >= init && DateTime.Now - previous_collection > TimeSpan.FromSeconds (5)) { // some arbitrary criteria
GC.Collect (GC.MaxGeneration);
previous_collection = DateTime.Now;
}
}
public void Remove ()
{
if (count == 0)
throw new InvalidOperationException ("Cannot call Remove method when Count is 0");
count--;
}
}
}
#endif
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