Add comment explaining why keeping delegate check
MODIFY
dd-java-agent/agent-tooling/src/main/java/datadog/trace/agent/tooling/ClassLoaderMatcher.java
dd-java-agent/agent-tooling/src/main/java/datadog/trace/agent/tooling/ClassLoaderMatcher.java
@@ -56,6 +56,14 @@ public final class ClassLoaderMatcher {
if (v != null) {
return v;
}
+ // when ClassloadingInstrumentation is active, checking delegatesToBootstrap() below is not
+ // required, because ClassloadingInstrumentation forces all class loaders to load all of the
+ // classes in Constants.BOOTSTRAP_PACKAGE_PREFIXES directly from the bootstrap class loader
+ //
+ // however, at this time we don't want to introduce the concept of a required instrumentation,
+ // and we don't want to introduce the concept of the tooling code depending on whether or not
+ // a particular instrumentation is active (mainly because this particular use case doesn't
+ // seem to justify introducing either of these new concepts)
v = shouldSkipClass(cl) || !delegatesToBootstrap(cl);
skipCache.put(cl, v);
return v;

Add comment explaining why keeping delegate check