Counter.cs

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using System.Collections.Generic;
 
namespace System.Diagnostics.Metrics;
 
public sealed class Counter<T> : Instrument<T> where T : struct
{
    internal Counter(Meter meter, string name, string unit, string description)
        : base(meter, name, unit, description)
    {
        Publish();
    }
 
    public void Add(T delta)
    {
        RecordMeasurement(delta);
    }
 
    public void Add(T delta, KeyValuePair<string, object?> tag)
    {
        RecordMeasurement(delta, tag);
    }
 
    public void Add(T delta, KeyValuePair<string, object?> tag1, KeyValuePair<string, object?> tag2)
    {
        RecordMeasurement(delta, tag1, tag2);
    }
 
    public void Add(T delta, KeyValuePair<string, object?> tag1, KeyValuePair<string, object?> tag2, KeyValuePair<string, object?> tag3)
    {
        RecordMeasurement(delta, tag1, tag2, tag3);
    }
 
    public void Add(T delta, ReadOnlySpan<KeyValuePair<string, object?>> tags)
    {
        RecordMeasurement(delta, tags);
    }
 
    public void Add(T delta, params KeyValuePair<string, object?>[] tags)
    {
        RecordMeasurement(delta, tags.AsSpan());
    }
 
    public void Add(T delta, in TagList tagList)
    {
        RecordMeasurement(delta, in tagList);
    }
}