LastValue.cs

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namespace System.Diagnostics.Metrics;
 
internal sealed class LastValue : Aggregator
{
    private double? _lastValue;
 
    public override void Update(double value)
    {
        _lastValue = value;
    }
 
    public override IAggregationStatistics Collect()
    {
        lock (this)
        {
            LastValueStatistics result = new LastValueStatistics(_lastValue);
            _lastValue = null;
            return result;
        }
    }
}