Instrument<T>
The base class for all non-observable instruments.
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace System.Diagnostics.Metrics
{
[DebuggerDisplay("Name = {Name}, Meter = {Meter.Name}")]
public abstract class Instrument<T> : Instrument where T : struct
{
[ThreadStatic]
private static KeyValuePair<string, object>[] ;
private const int MaxTagsCount = 8;
[System.Runtime.CompilerServices.Nullable(new byte[] {
2,
0
})]
public InstrumentAdvice<T> Advice {
[return: System.Runtime.CompilerServices.Nullable(new byte[] {
2,
0
})]
get;
}
[System.Runtime.CompilerServices.NullableContext(1)]
protected Instrument(Meter meter, string name)
: this(meter, name, (string)null, (string)null, (IEnumerable<KeyValuePair<string, object>>)null, (InstrumentAdvice<T>)null)
{
}
[System.Runtime.CompilerServices.NullableContext(1)]
[EditorBrowsable(EditorBrowsableState.Never)]
protected Instrument(Meter meter, string name, [System.Runtime.CompilerServices.Nullable(2)] string unit, [System.Runtime.CompilerServices.Nullable(2)] string description)
: this(meter, name, unit, description, (IEnumerable<KeyValuePair<string, object>>)null, (InstrumentAdvice<T>)null)
{
}
[System.Runtime.CompilerServices.NullableContext(1)]
[EditorBrowsable(EditorBrowsableState.Never)]
protected Instrument(Meter meter, string name, [System.Runtime.CompilerServices.Nullable(2)] string unit, [System.Runtime.CompilerServices.Nullable(2)] string description, [System.Runtime.CompilerServices.Nullable(new byte[] {
2,
0,
1,
2
})] IEnumerable<KeyValuePair<string, object>> tags)
: this(meter, name, unit, description, tags, (InstrumentAdvice<T>)null)
{
}
[System.Runtime.CompilerServices.NullableContext(1)]
protected Instrument(Meter meter, string name, [System.Runtime.CompilerServices.Nullable(2)] string unit = null, [System.Runtime.CompilerServices.Nullable(2)] string description = null, [System.Runtime.CompilerServices.Nullable(new byte[] {
2,
0,
1,
2
})] IEnumerable<KeyValuePair<string, object>> tags = null, [System.Runtime.CompilerServices.Nullable(new byte[] {
2,
0
})] InstrumentAdvice<T> advice = null)
: base(meter, name, unit, description, tags)
{
Advice = advice;
Instrument.ValidateTypeParameter<T>();
}
protected void RecordMeasurement(T measurement)
{
RecordMeasurement(measurement, MemoryExtensions.AsSpan<KeyValuePair<string, object>>(Instrument.EmptyTags));
}
protected void RecordMeasurement(T measurement, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
0,
1,
2
})] ReadOnlySpan<KeyValuePair<string, object>> tags)
{
for (DiagNode<ListenerSubscription> diagNode = _subscriptions.First; diagNode != null; diagNode = diagNode.Next) {
diagNode.Value.Listener.NotifyMeasurement<T>((Instrument)this, measurement, tags, diagNode.Value.State);
}
}
protected void RecordMeasurement(T measurement, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})] KeyValuePair<string, object> tag)
{
KeyValuePair<string, object>[] array = ts_tags ?? new KeyValuePair<string, object>[8];
ts_tags = null;
array[0] = tag;
RecordMeasurement(measurement, MemoryExtensions.AsSpan<KeyValuePair<string, object>>(array, 0, 1));
ts_tags = array;
}
protected void RecordMeasurement(T measurement, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})] KeyValuePair<string, object> tag1, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})] KeyValuePair<string, object> tag2)
{
KeyValuePair<string, object>[] array = ts_tags ?? new KeyValuePair<string, object>[8];
ts_tags = null;
array[0] = tag1;
array[1] = tag2;
RecordMeasurement(measurement, MemoryExtensions.AsSpan<KeyValuePair<string, object>>(array, 0, 2));
ts_tags = array;
}
protected void RecordMeasurement(T measurement, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})] KeyValuePair<string, object> tag1, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})] KeyValuePair<string, object> tag2, [System.Runtime.CompilerServices.Nullable(new byte[] {
0,
1,
2
})] KeyValuePair<string, object> tag3)
{
KeyValuePair<string, object>[] array = ts_tags ?? new KeyValuePair<string, object>[8];
ts_tags = null;
array[0] = tag1;
array[1] = tag2;
array[2] = tag3;
RecordMeasurement(measurement, MemoryExtensions.AsSpan<KeyValuePair<string, object>>(array, 0, 3));
ts_tags = array;
}
protected void RecordMeasurement(T measurement, [In] [System.Runtime.CompilerServices.IsReadOnly] ref TagList tagList)
{
KeyValuePair<string, object>[] tags = tagList.Tags;
if (tags != null)
RecordMeasurement(measurement, MemoryExtensions.AsSpan<KeyValuePair<string, object>>(tags, 0, tagList.Count));
else {
tags = (ts_tags ?? new KeyValuePair<string, object>[8]);
switch (tagList.Count) {
default:
return;
case 8:
tags[7] = tagList.Tag8;
goto case 7;
case 7:
tags[6] = tagList.Tag7;
goto case 6;
case 6:
tags[5] = tagList.Tag6;
goto case 5;
case 5:
tags[4] = tagList.Tag5;
goto case 4;
case 4:
tags[3] = tagList.Tag4;
goto case 3;
case 3:
tags[2] = tagList.Tag3;
goto case 2;
case 2:
tags[1] = tagList.Tag2;
goto case 1;
case 1:
tags[0] = tagList.Tag1;
break;
case 0:
break;
}
ts_tags = null;
RecordMeasurement(measurement, MemoryExtensions.AsSpan<KeyValuePair<string, object>>(tags, 0, tagList.Count));
ts_tags = tags;
}
}
}
}