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make operator token threadsafe #97

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Eliot Jones
2019-12-10 11:31:02 +00:00
parent af1217f910
commit d0443c6567
1 changed files with 9 additions and 3 deletions
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12
src/UglyToad.PdfPig/Tokens/OperatorToken.cs
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@@ -4,6 +4,7 @@
internal class OperatorToken : IDataToken<string>
{
private static readonly object Lock = new object();
private static readonly Dictionary<string, string> PooledNames = new Dictionary<string, string>();
public static readonly OperatorToken R = new OperatorToken("R");
@@ -24,10 +25,15 @@
private OperatorToken(string data)
{
if (!PooledNames.TryGetValue(data, out var stored))
string stored;
lock (Lock)
{
stored = data;
PooledNames[data] = stored;
if (!PooledNames.TryGetValue(data, out stored))
{
stored = data;
PooledNames[data] = stored;
}
}
Data = stored;