| /* |
| * 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. |
| */ |
| package org.apache.logging.log4j.core.async; |
| |
| import org.apache.logging.log4j.Level; |
| |
| /** |
| * Default router: enqueue the event for asynchronous logging in the background thread, unless the current thread is the |
| * background thread and the queue is full (enqueueing would cause a deadlock). In that case send the event directly to |
| * the appender (in the current thread). |
| */ |
| public class DefaultAsyncQueueFullPolicy implements AsyncQueueFullPolicy { |
| @Override |
| public EventRoute getRoute(final long backgroundThreadId, final Level level) { |
| |
| // LOG4J2-471: prevent deadlock when RingBuffer is full and object |
| // being logged calls Logger.log() from its toString() method |
| if (Thread.currentThread().getId() == backgroundThreadId) { |
| return EventRoute.SYNCHRONOUS; |
| } |
| return EventRoute.ENQUEUE; |
| } |
| } |