61 lines
1.6 KiB
Java
61 lines
1.6 KiB
Java
/*
|
|
* Copyright The OpenTelemetry Authors
|
|
*
|
|
* Licensed 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.
|
|
*/
|
|
package io.opentelemetry.auto.bootstrap;
|
|
|
|
/**
|
|
* Utility to track nested instrumentation.
|
|
*
|
|
* <p>For example, this can be used to track nested calls to super() in constructors by calling
|
|
* #incrementCallDepth at the beginning of each constructor.
|
|
*/
|
|
public class CallDepthThreadLocalMap {
|
|
|
|
private static final ClassValue<ThreadLocalDepth> TLS =
|
|
new ClassValue<ThreadLocalDepth>() {
|
|
@Override
|
|
protected ThreadLocalDepth computeValue(Class<?> type) {
|
|
return new ThreadLocalDepth();
|
|
}
|
|
};
|
|
|
|
public static int incrementCallDepth(final Class<?> k) {
|
|
return TLS.get(k).get().increment();
|
|
}
|
|
|
|
public static void reset(final Class<?> k) {
|
|
TLS.get(k).get().depth = 0;
|
|
}
|
|
|
|
private static final class Depth {
|
|
private int depth;
|
|
|
|
private Depth() {
|
|
this.depth = 0;
|
|
}
|
|
|
|
private int increment() {
|
|
return this.depth++;
|
|
}
|
|
}
|
|
|
|
private static final class ThreadLocalDepth extends ThreadLocal<Depth> {
|
|
@Override
|
|
protected Depth initialValue() {
|
|
return new Depth();
|
|
}
|
|
}
|
|
}
|