org.wildfly.security.manager.JDKSpecific Maven / Gradle / Ivy
Go to download
This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
The newest version!
/*
* JBoss, Home of Professional Open Source
*
* Copyright 2018 Red Hat, Inc. and/or its affiliates.
*
* 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 org.wildfly.security.manager;
import sun.reflect.Reflection;
/**
* JDK-specific classes which are replaced for different JDK major versions. This class is for JDK 8.
* @author Justin Cook
*/
final class JDKSpecific {
private static boolean active;
private static int offset;
static {
boolean active = false;
int offset = 0;
try {
// JDK-8014925 - An additional Reflection call may be on the call stack so check the offset needed.
active = Reflection.getCallerClass(1) == WildFlySecurityManager.class || Reflection.getCallerClass(2) == WildFlySecurityManager.class;
offset = Reflection.getCallerClass(1) == Reflection.class ? 2 : 1;
} catch (Throwable ignored) {}
JDKSpecific.active = active;
// JDKSpecific.getCallerClass will also add 1 to the stack.
JDKSpecific.offset = offset + 1;
}
public static Class getCallerClass(int n) {
if (active) {
return Reflection.getCallerClass(n + offset);
} else {
throw new IllegalStateException("sun.reflect.Reflect.getCallerClass(int) not available.");
}
}
public static boolean usingStackWalker() {
return false;
}
}