/* * SonarQube * Copyright (C) 2009-2017 SonarSource SA * mailto:info AT sonarsource DOT com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.sonar.process; import java.util.concurrent.atomic.AtomicBoolean; /** * Calls {@link System#exit(int)} except from shutdown hooks, to prevent * deadlocks. See http://stackoverflow.com/a/19552359/229031 */ public class SystemExit { private final AtomicBoolean inShutdownHook = new AtomicBoolean(false); public void exit(int code) { if (!inShutdownHook.get()) { doExit(code); } } public boolean isInShutdownHook() { return inShutdownHook.get(); } /** * Declarative approach. I don't know how to get this lifecycle state from Java API. */ public void setInShutdownHook() { inShutdownHook.set(true); } void doExit(int code) { System.exit(code); } }