org.apache.logging.log4j.message.BasicThreadInformation Maven / Gradle / Ivy
/*
* 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.message;
import org.apache.logging.log4j.util.Chars;
import org.apache.logging.log4j.util.StringBuilders;
/**
* Generates information about the current Thread. Used internally by ThreadDumpMessage.
*/
class BasicThreadInformation implements ThreadInformation {
private static final int HASH_SHIFT = 32;
private static final int HASH_MULTIPLIER = 31;
private final long id;
private final String name;
private final String longName;
private final Thread.State state;
private final int priority;
private final boolean isAlive;
private final boolean isDaemon;
private final String threadGroupName;
/**
* The Constructor.
* @param thread The Thread to capture.
*/
BasicThreadInformation(final Thread thread) {
this.id = thread.getId();
this.name = thread.getName();
this.longName = thread.toString();
this.state = thread.getState();
this.priority = thread.getPriority();
this.isAlive = thread.isAlive();
this.isDaemon = thread.isDaemon();
final ThreadGroup group = thread.getThreadGroup();
threadGroupName = group == null ? null : group.getName();
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final BasicThreadInformation that = (BasicThreadInformation) o;
if (id != that.id) {
return false;
}
if (name != null ? !name.equals(that.name) : that.name != null) {
return false;
}
return true;
}
@Override
public int hashCode() {
int result = (int) (id ^ (id >>> HASH_SHIFT));
result = HASH_MULTIPLIER * result + (name != null ? name.hashCode() : 0);
return result;
}
/**
* Print the thread information.
* @param sb The StringBuilder.
*/
@Override
public void printThreadInfo(final StringBuilder sb) {
StringBuilders.appendDqValue(sb, name).append(Chars.SPACE);
if (isDaemon) {
sb.append("daemon ");
}
sb.append("prio=").append(priority).append(" tid=").append(id).append(' ');
if (threadGroupName != null) {
StringBuilders.appendKeyDqValue(sb, "group", threadGroupName);
}
sb.append('\n');
sb.append("\tThread state: ").append(state.name()).append('\n');
}
/**
* Format the StackTraceElements.
* @param sb The StringBuilder.
* @param trace The stack trace element array to format.
*/
@Override
public void printStack(final StringBuilder sb, final StackTraceElement[] trace) {
for (final StackTraceElement element : trace) {
sb.append("\tat ").append(element).append('\n');
}
}
}