[GitHub] [trafficserver] maskit commented on a diff in pull request #9114: Add event loop timing histogram data.

[GitBox <gi...@apache.org>]

maskit commented on code in PR #9114:
URL: https://github.com/apache/trafficserver/pull/9114#discussion_r985331085


##########
include/tscpp/util/Histogram.h:
##########
@@ -0,0 +1,188 @@
+/** @file
+ *
+ * Fast small foot print histogram support.
+
+  @section license License
+
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <array>
+
+#if !defined(TS_VERSION_NS)
+#define TS_VERSION_NS _10_0_0
+#endif
+
+namespace ts
+{
+inline namespace TS_VERSION_NS

Review Comment:
   Why do we need versioning for this but not others?



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