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2021-09-20 18:20:01 +02:00
/*
Copyright (C) 2014-2019 de4dot@gmail.com
This file is part of dnSpy
dnSpy is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dnSpy is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
*/
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace dnSpy.Debugger.DotNet.Metadata {
static class ObjectPools {
static StringBuilder? stringBuilder;
public static StringBuilder AllocStringBuilder() =>
Interlocked.Exchange(ref stringBuilder, null) ?? new StringBuilder();
public static string FreeAndToString(ref StringBuilder? sb) {
var result = sb!.ToString();
FreeNoToString(ref sb);
return result;
}
public static void FreeNoToString(ref StringBuilder? sb) {
var tmp = sb!;
sb = null;
if (tmp.Capacity <= 1024 && stringBuilder is null) {
tmp.Clear();
stringBuilder = tmp;
}
}
static HashSet<DmdType>? typeHashSet;
public static HashSet<DmdType> AllocHashSetOfType() =>
Interlocked.Exchange(ref typeHashSet, null) ?? new HashSet<DmdType>(DmdMemberInfoEqualityComparer.DefaultType);
public static void Free(ref HashSet<DmdType>? hash) {
var tmp = hash!;
hash = null;
if (tmp.Count <= 1024 && typeHashSet is null) {
tmp.Clear();
typeHashSet = tmp;
}
}
static Stack<DmdType>? typeStack;
public static Stack<DmdType> AllocStackOfType() =>
Interlocked.Exchange(ref typeStack, null) ?? new Stack<DmdType>();
public static void Free(ref Stack<DmdType>? stack) {
var tmp = stack!;
stack = null;
if (typeStack is null) {
tmp.Clear();
typeStack = tmp;
}
}
static Stack<IEnumerator<DmdType>>? enumeratorTypeStack;
public static Stack<IEnumerator<DmdType>> AllocStackOfIEnumeratorOfType() =>
Interlocked.Exchange(ref enumeratorTypeStack, null) ?? new Stack<IEnumerator<DmdType>>();
public static void Free(ref Stack<IEnumerator<DmdType>>? stack) {
var tmp = stack!;
stack = null;
if (enumeratorTypeStack is null) {
tmp.Clear();
enumeratorTypeStack = tmp;
}
}
static List<DmdType>? typeList;
public static List<DmdType> AllocListOfType() =>
Interlocked.Exchange(ref typeList, null) ?? new List<DmdType>();
public static DmdType[] FreeAndToArray(ref List<DmdType>? list) {
var res = list!.ToArray();
Free(ref list);
return res;
}
public static void Free(ref List<DmdType>? list) {
var tmp = list!;
list = null;
if (tmp.Capacity <= 1024 && typeList is null) {
tmp.Clear();
typeList = tmp;
}
}
}
}